I have two Dell monitors and Windows 10 recognizes only one. Also, when in the recommended resolution of 2048x768 I get the message "1:Analog Input Cannot Display This Video Mode. Optimum Resolution 1280x1024 60Hz.

Where do you find a Run Prompt in Win10?

I found the run prompt and got to the screen - no second monitor is recognized...
BTW, the "Cannot Display" info goes away at any resolution below 2048x758 but what results is not usable. Also, when 10 was first up and running both monitors were functioning on the 2048 resolution. I lost them trying to find a resolution in which everything on the screens was a bit smaller. At no time has the second monitor been recognized by 10...

Problem solved! Fooling around last night I noticed a way to change the Hz to 60 cycles and everything works now! except the system anly recognizes one monitor even though both are working with the background extended across both...

Yes! DualHead2go. Thanks!

I am having a similar issue I just updated to windows 10 for free and now my 2nd monitor doesn't work. I have tried plugging the 2nd monitor into the other ports ( I am running duel GTX 570's) and nothing worked. I tried typing desk.cpl and a screen came up but didn't allow me to change anything.

How I fixed the Windows 10 "second monitor cannot be detected" problem on my computer.

I have a relatively new Lenovo PC with Windows 8.1. I loaded the new free Windows 10. ("Free" = "Beta version, you have been warned.") During loading Windows 10 my primary screen suddenly developed white noise everywhere instead of an image. I ended up having to turn off the computer and restart it. It had white noise again, I turned it off and on again, and the second time the display came up on the primary computer. However, the additional display could not be detected.

I tried reloading Windows 10, thinking there must be a problem, but I had the whole white noise problem over again, turning off and on, completing two novels and a trip to the bathroom while I waited. Turned out that Windows 10 had indeed loaded.

After messing around with this for an hour and a half and reading lots of helpful tips from frustrated MS users, I did find a solution on my computer. Go to control panel, device manager, display adapter. There is a driver showing and it indicated a problem (small yellow triangle next to the name of the driver). At another help site, it was suggested to right click and "roll back" the driver. I right clicked on the driver. The "Roll Back" option was grayed out. But "Update" was available. I updated. After a few minutes of updating the primary screen switched to white noise again. I turned off the computer and turned it back on and Voila! both monitors were detected and operating just as they had been with Windows 8.

For those who have not used additional displays before, to avoid merely duplicating the display on both screens, go to Control Panel, Display, Adjust resolution. It should show two monitors, #1 and #2. At the "multiple displays" click the dropdown and select "Extend these displays." Note also that you can choose which display is the "main display" (where your program icons and system tray show). Also, you can drag the two images of monitors to put one to the left of the other. That helps so that the cursor flows smoothly side to side between the monitors without having to slide off to the right of one to enter at the left of the other.

Glad to help if this was helpful.

TonyJ

Brand new Surface pro 4, windows 10, dual monitor works very intermittently. first boot, surface display and the 2nd screen connected through a display port to VGA adapter works fine. I have windows configured to turn off the displays after x number of minutes of inactivity, and about half of the time, the 2nd screen does not come back. I can reboot, and again, about half of the time the 2nd screen comes back. additionally, if I unplug the screen, mini display port adapter, then plug it back in again, it may come back. I've searched around, and found reports of the same issue, but no solution. Anyone encountered this and found a fix? Seems windows 10 related.

*Edit* - one of the fixes I found suggested running something like DisplayFusion or UltraMon to manage the monitors... which, of course does not seem to completely fix the issue. DisplayFusion is current, Windows10 is currenty, Surface drivers are current.

Hi Keith,

I followed your instructions below

-Open a Run prompt
-Type the following and click ok: desk.cpl
-Select the second monitor
-Choose "Extend these displays" from the Multiple Displays drop-down

and my second monitor isn't popping up. It's connected with a HDMI cord and has worked fine before I downloaded the new Windows 10 version. Any idea why it's not recognizing it anymore and how to fix it?

Thanks,
Joe

Hi Keith,

The resolution is grayed out. When I click "Detect", nothing happens. When I click "Identify", it only shows the number 1 on my laptop. Basically, it isn't detecting the second monitor at all.

And the way it's hooked up, through an HDMI cable, is the exact same way I've done it for years with the old Windows. How come Windows 10 doesn't recognize my second screen (tv)? And what do I do to fix this? Completely insane that this isn't working. It's basic stuff like this that doesn't work on Windows which makes people switch to Macs. The ease of use and system functionality seems much smoother on Macs. Anyway, I'm stuck with Windows so any help would be greatly appreciated.

Thanks,
Joe

Ok, here's what I got AMD Phenom II X6 1100T Processor 3.30GHz, 16GB RAM, Win10 Pro 64bit, XFX Radeon R7 260X, Compaq Q2009 Series Wide LCD Monitor and a Niko Monitor. The Compaq is VGA that I use a DVI adaptor. I got the Win10 64 driver from the AMD site.
For Win10 I got the free upgrade and did a clean install.

Like many of the other posts, only 1 monitor is detected. I tried rolling back the driver, I tried windows updating the driver, i tried the AMD site driver, I tried uninstalling the AMD driver and windows driver and re-installing the AMD driver.

During boot up, both monitors show the bios, they even both show the windows loading swirl. Right before it gets to the windows log in screen, one monitor goes blank and says no signal. After work tomorrow i'll try switching which plug each monitor goes in and one at a time in each plug. But because they both show the bios, i don't think it's a plug issue.

Any tips I should try would be helpful, i already tried everything else I've seen on this thread.

Took me a while to figure it out but this fixed my problem.

Device Manager --> Display Adapters --> Click on BOTH drivers and update them both. I also updated the driver in "Monitors" as well. Then I restarted my computer and it worked.

Crazy how Windows doesn't update your drivers when it upgrades to Windows 10. Beyond me how that is overlooked.

I have a similar problem, although it's not a big deal. I think it's a Windows 10 issue. Running 2 monitors off a video card on a desktop. Maybe 70% of the time on a reboot, only the main monitor displays anything. My workaround is to open display settings where everything looks like it should. (as though the second monitor was working properly, it isn't, just a black screen) I change to "show only on 1" Accept and keep. Then immediately change it right back to "extend". Accept and keep and both displays show the way I want.

Sometimes a reboot works properly, but more often than not, these couple of steps need to be done. Hope this helps if someone has a similar problem. Bit of a pain, but it's quick and easy until a fix comes along.

ive been looking everywhere for help and cant seem to find a fix.
My second monitor is only being recognized when it is turned off, soon as i power it on my computer doesnt recognize it anymore.
ive read its a possoble windows ten issue.
build info incase that helps someone figure my issue easier
i7 6700k
MSI z170a MB
EVGA GTX 970 FTW edition.

any help is greatly appreciated.

also the monitor im hooking it into is to my DVI port. i dont have a display port cable to test if it works with that yet or i would.

Premiierr, does your computer recognize both monitors if they are turned on prior to booting the computer?

yes and no. it does recognize them, however my second monitor is only is recognized when the power is off. soon as i turn the monitor on it no longer acknowledges it. ive checked different cables, and even other monitors (the other monitors tested were the same brand and model however) and same issue. but they worked just fine before. its also connected to the DVI port if that maybe helps with the issue. but again it worked before with no issues.

Whew, got me on all that. Only other thing that comes to my mind .... and you've probably already tried this ... is to try a non dvi cable (hdmi or displayport) if you can with that monitor.

I have 2 asus monitors and I have been having really bad trouble with connecting my second monitor after the windows 10 update. I need HELP!

I'm having a similar problem. I initially got a vga splitter and it was working, but it just mirrored the same stuff on both screens - it didn't extend. I must've messed up something in my settings because now when I plug in a monitor via VGA and a second monitor via HDMI it shows a blank desktop with programs lit up in my taskbar. I have two different home screens on each monitor and when I use the mouse, it will extend to both screens the way I wanted it to originally. however, when I click the tabs in the task bar to open the program, nothing happens. I cannot open any programs. All I can see is two different backdrops on each screen, with the mouse extending to either screen, but no icons on either of them.

If I try to operate by plugging my monitor directly into the VGA port, it will not work. It is just a black screen. It will only work if I use a vga splitter. Right now I'm currently operating by using one monitor plugged into one of the vga splits. Does this make sense? Essentially it works but not the way it is supposed to. How can I correct these settings?

I have the same problem...

I have basically tried everything you have written in this post, but nothing works.
I've updated drivers, tried with a VGA-cable, well, everything.

Do you have any idea of a solution?

Hi. I have an Lenovo Ideapad P400 and was going to connect two monitors and the second one is not recognized. Each my themselves no issue. HOwever, one is connected DVI to HDMI and the other one traditionally VGA. Never had issues before, but then again I have always used a port replicator. Not on this one. Is it not possible to have two external monitors connected to the laptop like this? When choosing detecting the laptop display is always 1, even when the lid is closed. Any ideas please?

Best,
M

HI im having same issue i had dual monitors running fine on windows 10 then i installed new ssd and now my second monitor wont detect at all. I tried rolling back drivers, installing new drivers nothing fixed it. currently using vga for main monitor and second screen has dvi.

my second screen which is a 13 year old dell screen which doesnt light up wheen started (seems to be in power save mode) if I take a screen shot it does appear in the pic and don´t know why it doesn´t work
please help me before I break something

I have the same problem. I have tried updating my drivers: the display adapter and the monitor one.
I have also tried to rollback the display adapter and update again.
I have tried downloading the intel drivers, but that didn't work either.

I am using an Asus Laptop to dual screen with my monitor using Micro HDMI to HDMI wire. It worked perfectly fine for the first 2 weeks, now my laptop doesn't even detect the screen.

Any help/suggestions will be appreciated.

I have tried the troubleshooting technique and have also restarted my computer in relation to the attached images. However, the second monitor was detected for 5 seconds maybe and then, went undetected again.

Maybe you can help me with this situation.

when I go to select "extend these displays" and hit apply a box pops up and says "the display setting could not be saved, please try a different combination of display settings.
for reference, I have one plugged into my radeon 7800 and the secondary plugged into the motherboard, its a pretty old monitor, but it worked fine until windows 10 decided to install itself..

Finally worked. My wire that I bought seemed to malfunction after all. I tried a new wire and it turned out fine. Lot of frustration, but everything is good now. Thanks for your help.

Hi, seem to have a similar problem here
I use lenoovo z500, geforece gt 740m, win 10 with a pilot 2nd screen.
this first happened to me after upgrading to win 10. the pilot screen just suddenly not recognized and only gave me the no signal message.
i cannot remember how but i managed to find a solution online and fix it. i remember i had to do something in control panal>device manager and i think it was a problem with the driver.
now, a few months later i suddenly had a problem with the laptop's original screen-it was stuck dim. the solusion for this was to update the "generic pnp monitor" driver under "monitors"
once this update was completed the dim problem was fixed but now the pilot screen is again not recognized. what should i do
tried updating the geforce driver
i'd appreciate a copy of your reply to neronar@gmail.com

thanks!!!

After reading through everything I was wondering if someone would be able to tell me if my issue is with my laptop or it's simply the hdmi cable I have.
I have my laptop plugged into my tv with a hdmi cable so I can watch tv on on a bigger screen with better sound. I have windows 10 but I've had that for months, way before I started using the cable, so unlike what a lot of people are saying in this thread it's not an update issue. The issue now is that whilst my second screen/tv is receiving a signal, or at least something, from the cable (because its black not blue) there's no actual display or sound coming from it. It's been working fine for months and only having a glitch and losing signal if I moved the wire by accident.
If the wire is damaged, is it possible its only slightly damaged? Which would explain why it's taunting me with a black screen and nothing more...

My LENOVO Laptop operates using Windows 10. I purchased an HDMI cable couple of months ago to enable me to watch movies on my television (Samsung). For the past few months everything was running fine UNTIL I recently watched a movie using a DIFFERENT Website. As a result, I now CANNOT project any movies or computer displays on the television screen BUT laptop display is OK.

BEFORE: Advance Display Settings - Multiple Display - Duplicate these displays. This will display 1 + 2.

NOW: Advance Display Settings - Multiple Display - Duplicate these displays. NOW displays 1/2.

Seek you assistance. Tq

Windows 10 is a virus that wrecks perfectly working old computers and microsoft and the computer manufactures are profiting from it. I might never buy another pc again as I've seen it wreck friend after friend's computers. I wouldn't recommend installing it. Just keep your original windows version. I've updated lots of computers over the years from one version to the next and never seen the problems that windows 10 is causing.

hello guys, i been trying for few days to connect my second monitor. i never been on this website before but you guys seem to know alot about this issue, i dont know anything about pc im just a guy who wants to connect a second monitor. somehow im seeying the same thing on both screen, but i cannot (expand)? or i can see diferent things on the second monitor witch its what i want, can you guys pls help me i been o nthis for days now i even created an account here to ask for help guys

hello, my laptop which is a DELL is facing the same problems as my lenovo. The DELL laptop is using Windows 8 while the lenovo is using Windows 10. Previously i was able to duplicate the display from my laptop to the TV screen using a HDMI cable (both laptops could do it). But now it won't duplicate anymore because apparently there's "no signal" even though the tv detected it. As can be seen from the attachments, I believe that both screens should be labelled as "1" and "2" but now it says "1/2". is this the problem? and if so, how do i rectify it?

please help me! thanks! =)

Hi , I have the same problem , trying to set up my tv as a second monitor with Windows 10 , on the first 2 weeks was all good , and than after stop working . I had try every thing , even what a couple o people done here and nothing !! Any suggestion ?? Any one could help me
Thanks

Hey Guys , just adding something from the post before, I was looking to fix the problem from the monitor and i when all the way to the "Device Manager" and to the "Display Adapter" and just Disable my
Intel(R) HD Graphic and enable strait way , and the monitor got back to work !! So here is the Question , is that have to be done all the time?? Will fix the problem definitely? Any Thought any one

thanks

the fix for this for me was found when I completed Windows Updates, drivers were re-installed and my dual monitors came back!!! I had spent hrs stressing over this issue.

Hi,
Just FYI, to all whos having trouble setting up their dual monitor.

I have recently purchased Toshiba Satellite L55-C i7 6700 HQ and was trying to setup Dell monitor as a second monitor using a VDI(Dell) to HDMI(Laptop) cable.

It dint work as plug and play.

Did restart multiple time and still no good.

Solution:
Went to Device Manager - and updated the driver automatically.

It solved the problem.

Hope that helps.

Okay, guys.

I don't know if you guys fixed your issues, but here is how I resolved my issues:

I went to control panel > device manager > display adapters, and then I opened the little 'folder'.

It gave me my driver and it said it had a problem, so I right-clicked and selected UPDATE, but it said that the driver was already up to date.. sooo, I right-clicked again and selected "DISABLE" - then, I re-enabled and VOILA! The issue was solved!

@Breedly

I am in exactly the same position mate. One of my computers has got two monitors plugged into it. Sometimes I can switch the computer on and both monitors will come on with extended display, However, today it took about four reboots and then shut down and starts before the second monitor came on.

On another note, the computer I am on at the moment uses Windows 7. I have two monitors plugged into it and there's never been a single case where the second monitor has not come on when I put the computer on.

I solved my specific problem after a day of troubleshooting.

Essentially, the HDMI output to my second monitor connects to the motherboard of my PC. The VGA connection of my main (working) monitor connects to the GPU. There is also a VGA port on the motherboard so I switched the working monitor to that and it didn't work. I therefore wondered if updating GPU drivers didn't actually affect those connections and I actually needed to update the graphics rendering inbuilt into the CPU. I looked in Device Manager to update the drivers for the on board GPU and it wasn't listed under Display Adaptors. I then booted into UEFI (BIOS) and checked the video adaptor settings.

It was set to AUTO, which means that it prioritises the graphics card over the inbuilt graphics. I changed it to "IGE" so it prioritises the inbuilt graphics. I had to reboot twice, but after that my second monitor came up!

That was the damnedest thing! I was doing everything I could think of to try to get it to recognize my second monitor and nothing was working. It had been displaying the same screen on both monitors but every time I clicked 'Detect' it told me that it couldn't detect a second monitor.

Then while I was reading the discussion in this forum, the screens went black for a few seconds and came back on having automatically switched to an Extended display, now recognizing both monitors. Crazy! I think that Windows 10 was just doing some behind the scenes downloads to set this up for me without letting me know it was working on it. (The computer was making a lot of clicks, as if it was setting something up).

So maybe I just need to leave the new computer alone for a while as it talks to the internet and gets all the drivers it thinks it needs without telling me what it's up to...

Good Evening,

I need some assistance. I have purchased a Lenova desktop PC with a NVIDIA quadro graphics card installed. I am trying to use a Hannspree monitor and either a LG or Dell monitor along side it.

My issue is the second monitor (LG/Dell) isn't being detected by Windows 10. I have looked into the BIOS and changed settings in there but all I have managed to achieve is to make the second monitor come alive and the first monitor go off!!

They are connected via VGA & DVI. The DVI is connected to the graphics card and the VGA is connected to the onboard card.

Any suggestions/help would be greatly appreciated.

Thank you.

Happy new year! I have a lenovo with intel hd graphics family. at first it would have one screen with 1/2 on it. then I updated drivers for the intel, now the intel identifies the second screen, but when i go to "detect", didn't detect another another display. Trying to stay vga (ya i know old school) but for use that's what's available right now where i'd be trying to go dual display. Is there a specific driver needing updated for the vga port? Or another driver i need to update? I ran windows update and everything is up to date. ran somethings individually, up to date. By the way, I got this lenovo about a year ago, i've never been able to go dual display.

I have an MSI laptop and I'm using a second display "Dell".

Windows 10 simply kept saying something like display not recognized, identified both as 1/2, so it was duplicating the display with the resolution of the Dell laptop display.

Detect didn't work, changing display settings to "Extend" didn't work.

This worked for me: "Control Panel" > "Appearance and Personalization" > "Display" > "Project to a second screen".

I got it to work...cable wasn't fully in!

I'll try that jth2, get back with results. really want to have the ability to use my laptop for church backup (services)

thanks that has helped.

none of this worked for me

Monitor says "No signal",
Display Setting on PC say "didn't detect another display"...

Nvidia Gforce GTX 970 card all drivers up to date
DVI-D to VGA cord is new and plugged in tightly at both...

HI
Computer specs

Processor : AMD FX-8350 Eigh-core 4.00 GHz
Edition: Windows 10
GC: Nvidia GeForceGTX 1060

Hdmi x1 DVI-D x1 Displayport x1

2 monitors-
1st Vizio TV 1xHDMI 1xVGA
2nd: ViewSonic monitor DVI-Dx1 VGAx1

so, Im trying to do a HDMI and DVI set up but my computer is not recognizing my dvi monitor. No matter what I do. On my old comp i just did dual VGA hook ups, because my tower had a VGA port. Now it doesnt so Ive been trying to figure out why it only picks up my HDMI monitor and not my DVI..Help??

PS all my drivers are updated and everything and adapters dont seem to work.

Hey all-
Couldn't go through all replies, hope not reinventing the wheel. I have a Dell. Right click on desktop, select Intel Graphic Settings, then you'll get an option to add a second display. I had been having the same problem with display not detected.

I have been using Windows 10 Pro on MS Surface 3 with a second monitor via mini display port adapter for over 2 yrs without a problem. It was working fine upto just 30 minutes ago, when Windows prompted me to reboot for an update. After rebooting, the external monitor is black, and Windows doesn't detect an external display. The power is on, I tried unplugging / replugging the adapter, turning the monitor's power off and on, re-rebooting Windows, and so forth, but no luck. Opening desk.cpl and clicking "Detect" results in "Didn't detect another display". WTF, Microsoft?

Hi,
this is a long thread, and while the hygiene checks seem to have worked for some people, I believe I am not alone in still having this issue.

Issue summary: PC was running Vista! with 2 screens arranged as an extended display. Upon updating to Windows 10, both screens show the same display. This cannot be changed in display settings as only 1 display is "detected".

In addition, one screen resolution looks strange (slightly squashed), the other has a color issue (gray appears purple). These are both new issues which were not apparent running Vista with the same hardware.

Both screens are attached to the back of the PC, one in the VGA slot, the other in the DVI-D slot. No changes in this set up since it was all working in Vista.

Following this thread, the following have been attempted without success:
1. Checking cable connections not loose
2. Control Panel > Device Manager > Display Adaptors > Update Driver
3. Control Panel > Device Manager > Display Adaptors > Disable Device then Enable Device
4. Rebooting
5. Installing Windows 10 Updates

Same result each time -"Didn't detect another display"

Given that everyone was so critical of Vista and raves about Windows 10, surely the new version is able to cope with such a basic productivity tool as having 2 monitors connected but showing different windows? Please help!

Tried this?

https://answers.microsoft.com/en-us/windows/forum/windows_10-other_settings/windows-10-does-not-detect-second-monitor/93dd0c44-8608-48d2-a032-f81493a94d12

Hi Alan,
These options are not appearing on my system!

1.1) I don't have an app called "Connected Devices". Searching in the Start button just brings up a load of websites like this!

1.2) Under Control Panel > Devices & Printers, I did find "add a device" but the scan on clicking this failed to find any other devices

2) I don't have a "display" option within Control Panel

any ideas? Have they changed the names?

Hi,
I know you say you updated the driver through the Device Manager but what graphics card do you have?
Check which driver version is installed by right clicking on the Graphics Card in Device Manager and selecting Properties then match it up with what the manufactorer says is the latest version.
Download the latest driver from their site (Nvidia, Radion), if its a GeForce card then you should have GeForce Experience installed that will tell you if there is a driver update etc.

Use that as a starting point as a lot of multi-monitor problems on Win 10 fall on to the drivers.
The apps in that article are in the Settings App (Winkey + i) I believe.

Once you have done the driver update then post back and we can go from there.

Ok so i have read every single post on here and NOTHING works. I have been trying to get my monitor to detect my second screen and i dont know if i am doing it right or if i am using something that just will not cooperate with it at all.

OMG I finally found something that works, having failed with every single suggestion posted (though thanks to Alan in particular for really trying hard)

I came across the original DVD that shipped with my PC about 8 years ago.
I then went to control panel > device manager > display adaptors
I right clicked on generic PnP monitor and selected update driver
I then browsed to the DVD for the driver folder

If I could find the actual driver file I'd upload it here, but maybe you can find it online from any clues in my success message, attached.

Good luck everyone
Ben

Hello everyone,
I am surprised that for the last 3 months I have a win 10 HP Envy Laptop that I can not seem to connect any vga monitor to it in anyway thru USB or HDMI. I also have a win 7 that I connect these monitors to without issues. The monitors I have are both HP LE1901w. They work like they should. Recently I ordered another 3.0 USB to vga for win 7, 8 and 10 this time from Fresco Logic as this came with another mini disk that I loaded, installed, selected Win + P for extended and nothing happened. when I look up PC info it only shows 1 Big PC screen, that's it. I click detect and nothing. I shut down the monitor and turned it back on just to try to grab the signal with luck, well nothing happened so I restarted the PC, same thing. I shut it down swapped monitors and swapped cables from the one I currently use for Win 7 I have the same results from each connected monitor that displays vga input: no signal. If i disconnect the cable it says vga connection lost. Next I went to the Fresco Logic website and downloaded the latest display driver and tried again restarted and tried again. Next I updated the Windows 10 display driver of course it says it is already updated. I tried again, restarted and tried again. The laptop does not come with a VGA connector. Next I went to Intel website and found Intel® Graphics Driver for Windows* [15.45] for Intel (R) HD Graphics 530 Version: 15.45.18.4664 (Latest) as of 5/3 2017 and it failed to install due to incompatibilities.
So there is a difference between the the latest version and what I have installed. So I installed the Intel Update Utility and hopefully iy will find something as the monitor that has no signal is still connected.
Anyways thanks for looking into this for me.
Thank you CL

This happened to me yesterday.
Laptop HP ProBook 450 G4
External Monitor Asus VX238H
Windows 10

I've been using my Laptop with another external monitor (not the one above) at work for several weeks. No problem using the extended monitor with a VGA connector.

Yesterday, I took the Laptop home and attached my Asus Monitor to the HDMI connector.
Display Settings detected the new monitor and it configures it as an extended display. Perfect. Windows10 even detected the monitor speakers. Great.

After a couple of hours working with this setup the computer starts to slow down noticeably. The GUI becomes unresponsive and impossible to work with. So, I reboot the Laptop.

When Windows10 starts again, it no longer detects the external monitor. I've done many of the solutions suggested above (disabling/enabling the display adapter, rolling back the driver version, etc) but Display Settings no longer sees that monitor again. The monitor works, I've checked it with another PC.

Any idea?

so for me, i had to go to bios and enable integrated graphics, as well as download/update the internal gpu driver which was missing..i guess windows 10 didnt think i needed both, but i was trying to run 1 monitor off my gtx 660 and another on integrated graphics, hope this helps someone

Second monitor not working.
My second screen is just black when i start it. I don't know what's wrong. please help:c

Easy steps that worked for me (ASUS laptop):
- Type in the search bar "display settings"
- Open the "Settings" window
- Scroll to the bottom and click on "Advanced display settings"
- Scroll again to the bottom and click on "Display adapter properties"
- Click on the "Monitor" tab
- Change the refresh rate to 60 Hertz. If it was already 60 Hertz, select something else and then select "60 Hertz"

I stopped reading all the suggestions here once I found my specific solve so if it's already posted here I apologize for the redundancy.

I have an NViDIA graphics card in my Dell Optiplex 880.

To get my multiple displays to work I had to go to the NViDIA Control Panel (as opposed to the Windows 10 Control Panel) and turn on the Multiple Display option there first. In the NViDIA control panel I turned on the Multiple Display option as well as set the screen order.

To set the Default Screen back to my main computer montitor I had to go to the Windows control panel for that option.

I hope this helps somebody.

I can not imagine, that the problem persist for 2 years now! What is wrong with Microsoft?
I really tried everything in that thread and not only. There is no solution.
If somebody find it final, let us know.

AMD Radeon(TM) R7 360 Series
i3-4170 CPU@ 3.70GHZ

I had this problem a while ago.
Every soloution recommended here didn't work for me.
I gor frustrated and went to asus website and download my laptop intel hd graphic driver again , that driver is too old ( 2014 version i think ) , unistalled my driver ,installed old one , restart and ye problem solved.

I have two laptops both with Windows 10. Both working perfectly with second monitors. I swapped the HDD's (just to get the best performance for the newer laptop) and now BOTH cannot detect the second monitor in Display settings i.e "Didn't detect second monitor" and also cannot find monitor in Device Manager?
Even stranger, on one of the laptops since the swap over certain keys don't work properly e.g pressing i = "5", j = "1", k = "2", l = "3", m = "0", p = "*", 0 = "/"... Freaky stuff!
Remember both worked perfectly before the swap!

Just experience this problem. Was able to fix it by going into BIOS under devices and clicking display properties, and switching multiple displays from disabled to enabled. Unsure how it got disabled in the first place but hopefully it works for you too.

Hey, I used to have both of my monitors working, but I reinstalled windows 10 and I've tried to hook both of my monitors up once again which are connect by HDMI and VGA to DVI. Every time I would boot up my pc the first monitor would load up the windows 10 logo and then after that it will just pop up "No signal" and it switches over to my other monitor, but that monitor is gray and the only thing I can see is the mouse moving, but I can't log in. Once I disconnect the other monitor that isn't working and use the other monitor I would go into the display settings and then hook up the second monitor and click "Detect", but it would still be black, but i'm able to move my mouse to the other screen, but the screen is still pitch black. I tried rolling back the drivers, but that doesnt help. I'm able to boot up the second monitor that isn't working in safe mode, but not normally.
Help?

I have had windows 10 for a bit and just recently started having issues with the second monitor. I will lock my HP laptop and when I return and unlock my computer, all items that were on monitor 2 are now moved over to monitor 1. any ideas as to why this is happening all of sudden?

How I fixed my issue of dual monitor.

In device manager, I deleted my only detected monitor. Went to the root (that will be the name of your PC). Select. Right click and Refresh (automatically detect). After a blackout of few seconds, second monitor came to life.

I have two monitors but after windows update, only one was displaying. Other was going to sleep soon after machine was coming back up.

Hope it help

Abbas

I found a solution to the problem if you are using AMD Radeon video card.

Open AMD Radeon settings---> Gaming--->Global Settings---->AMD CrossFire - turn Off

Went to that spot and there was not AMD CrossFire option on mine sadly, ever since the update my 2nd monitor though works fine and comes on the resolution is all out of wack and the PC does not detect 2 monitors even though the 2nd is working just needs to have the resolution fixed .

I have a Sony monitor. I have Windows 10 and I am trying to make my kano a second screen. But it will not connect, I think the trouble is that I have a completely normal Windows from December 2017 with no updates. Please reply and help.

Thanks for all the great suggestions. My older Dell second monitor that I have used for many years started to act flakey after a Window 10 update, sometimes worked, sometimes on reboot, then not at all. I tried various connections on the monitor, variations of outputs on my ASUS Laptop N550JX, and a combination of all those, tried a second HP monitor, etc. Tried a variety of the suggested solution posted here to no avail. What worked was to go on the ASAU website and download the graphic drivers there, and despite the repeated warnings from Windows that there were newer versions already installed on the PC, I installed them anyway, i.e. rolled the drivers back to older versions. I added a second external monitor, and now the laptop display and two external monitors work great!!! Thanks for all your help!!!

Try Duplicate display and then Extend display

I need gurus please!

I am trying to connect my laptop to 2 monitors which will show different screens (i.e not duplicate).

Laptop: Acer Nitro 5 (7700HQ, GTX 1050 Ti) https://www.notebookcheck.net/Acer-Nitro-5-7700HQ-GTX-1050-Ti-Laptop-Review.251846.0.html

Processor: Intel Core i7-7700HQ (Intel Core i7)
Graphics : NVIDIA GeForce GTX 1050 Ti (Notebook) - 4096 MB, Core: 1493-1734 MHz,

Connectivity: USB 3.1 gen 1 (Type-C), HDMI along with others

Monitors: Dell UltraSharp 24 InfinityEdge Monitor - U2417H, both the same

What I've done: -
- connected the monitor 1 via HDMI
- connected the monitor 2 via hdmi with USB type C adaptor

My laptop cannot detect the monitor 2 for some reason. I have no option to rollback (found the place to do so but it is blocked out. possibly because my laptop is barely a month old) and I have updated the drivers.

Both monitors worked fine if I connect them directly via the HDMI cable.

Please help!! Thanks in advance!

I just fixed this problem and thought it had something to do with upgrading Windows 10 to Windows 10 April 2018 edition. My second display monitor (my TV) was showing No Signal and was not detected in the Display Setup in Windows.

(1) Updated the video driver in Device Manager under Display Adapter - Nvidia GeForce GT730 and restarted the computer. Didn't fix the problem.

(2) Shutdown the computer and restarted. Didn't fix the problem.

(3) Moved the Nvidia video card to a different slot. Didn't fix the problem.

(4) Checked the connections at the TV and the adaptor box for the RGB/VGA/HDMI cables, which all seemed tight when I checked them before step 1 above. I unplugged the HDMI cable from the adaptor box and then plugged it back in. Immediately, the TV monitor was detected and it all works now.

OK, so I thought I will add a fix to this issue that worked for me, cause it was hell frustrating!!

So the problem I had was my second monitor was just black, saying 'no signal' although in display settings it was showing a second monitor.

I have two Asus monitors, one is brand new, the other was made in 2003.

I had the new one connected via hdmi, the latter via vga with a dvi-d adapter, plugged into my new graphics card.

The second monitor had been working when I connected it to the motherboard, but then on the new screen it was all white washed and super crap!

The fix for me, after trying everything google had to offer, was to buy a Male to Male Dvi-D cord. Thankfully my old monitor had a port for Dvi-D, they sell for around $40 at some places, but that is how I managed to fix the issue.

Hope you all have a great day!

I had this issue twice over the past 2-3 years. It appears randomly and has nothing to do with cable or monitor quality. Neither are refresh rates or resolution to blame - they are normally changed by the adapter automatically.
My configuration:
- Lenovo Yoga 2 on Atom Z3..., Win 10 32, HDMI-to-VGA adapter
- LG Flatron L192WS

What worked for me:
- Win Logo + P to enter the projector/multiple displays menu while 2nd monitor is connected and the "Out of range..." error message is displayed;
- The tablet screen turned on, while the external monitor became inactive;
- From there I could change settings: Output to (Extended desktop);
- Both screens worked;
- Now I could enter the settings of the External display and double check that the resolution was native and the refresh rate was 60Hz;
- I changed Output to (Digital television) and it worked.

Hope this helps.

After a fresh install of windows 10 I was having this issue as well and I tried to update the graphics driver but it was a windows update that fixed it for me, just remeber when thigns stop working, your best bet is to check for a windows update.

trying to run one monitor on vga and one on hdmi. the VGA one never is detected. hdmi one works fine. windows 10! updated drivers, done everything this forum as told me and it still doesn't detect. i've tried with multiple different monitors and cords but nothing works as far as detecting a vga as a second monitor, please help!

for all those who lost second monitor upgrading to 10 in device manager display roll back driver i looked for my hp 110-1127nr display or video driver page showed it was a intel driver i downloaded it the one for win 7 installed it walla back to watching all and playing all for free again and computing on my big screen theres a reason bill doesent have this fix he works for the capitalists they dispise we brilliant motherfucker who dont bow to bullies i looked for it on hp site not they work against us too

for all those who lost second monitor upgrading to 10 in device manager display roll back driver i looked for my hp 110-1127nr display or video driver page showed it was a intel driver i downloaded it the one for win 7 installed it walla back to watching all and playing all for free again and computing on my big screen theres a reason bill doesent have this fix he works for the capitalists they dispise we brilliant motherfucker who dont bow to bullies i looked for it on hp site not they work against us too

for all those who lost second monitor upgrading to 10 in device manager display roll back driver i looked for my hp 110-1127nr display or video driver page showed it was a intel driver i downloaded it the one for win 7 installed it walla back to watching all and playing all for free again and computing on my big screen theres a reason bill doesent have this fix he works for the capitalists they dispise we brilliant motherfucker who dont bow to bullies i looked for it on hp site not they work against us too

I have read through all these comments and watched countless youtube videos as well, and none of it has solved my issue which is slightly unique. I have two monitors and use my laptop from work. Two things changed recently, the first being I unplugged everything and took it on a long trip. The second is right before I left they upgraded me to Windows 10.

Now that I am trying to get up and running again, the monitors both work.... but they both show just my laptop on each. When I try to detect, it does not find them but unde Device Manager​ if I click Monitors three are listed and all three say "this device is working properly."

Since it's my work laptop there are some things I can't do as an administrator but considering they worked before and are technically working now, I doubt it is the drivers are a couple of the other suggestions.

Thanks for any help!