windows 8.1 dual monitor detection issue

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Faestaris

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Nov 22, 2013
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I have two monitors and only one of them is being detected by my computer. I have 1 18" lg (not being detected) and 1 24" SILO. I had two monitors working before updated to windows 8.1 from 8. Also I cannot get the right resolution for my SILO
 
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I have the same issue as Faestaris. And nothing help's.
My dual monitor is black after updatet to 8.1.
I has tryed to deinstall and install the amd driver software or under safe mode deinstall the windows default driver. Really nothing happens.
I think the problem is Windows and not the graphic driver. Because a other BenQ Monitor is also black when i plugged via DVI.

Here some infos about my system:
-- OS
Windows 8.1 Pro (since last week updated)
-- Graphic Card
AMD Radeon HD 7900 (lastest AMD 13.11 Beta 9.4 installed)
The new graphics driver of amd are ready to download under http://support.amd.com/en-us/kb-articles/Pages/latest-catalyst-windows-beta.aspx but it's not solved my "black screen problem".
-- Monitors
22" Samsung...
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Willy Fetzig

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Nov 28, 2013
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10,520
I have the same issue as Faestaris. And nothing help's.
My dual monitor is black after updatet to 8.1.
I has tryed to deinstall and install the amd driver software or under safe mode deinstall the windows default driver. Really nothing happens.
I think the problem is Windows and not the graphic driver. Because a other BenQ Monitor is also black when i plugged via DVI.

Here some infos about my system:
-- OS
Windows 8.1 Pro (since last week updated)
-- Graphic Card
AMD Radeon HD 7900 (lastest AMD 13.11 Beta 9.4 installed)
The new graphics driver of amd are ready to download under http://support.amd.com/en-us/kb-articles/Pages/latest-catalyst-windows-beta.aspx but it's not solved my "black screen problem".
-- Monitors
22" Samsung Syncmaster 2233BW (primary)
19" BenQ FP937s (second)

The actual state that the 19" monitor get signal (the led near the powerbutton lighs green) but the whole display is black.
Both monitors are plugged by DVI cables. With VGA cable is'nt possible to detect the 2nd monitor.

Under Device-Manager is the second monitor called "PnP-Monitor Standard" and in the resolution manager of windows they called by name "BenQ FP937s" also in Catalyst Control Center.

If i reanimate my monitor. BenQ logo shows - fade out - desktop appear (low brightness but seeing task and background-image) and after 2 seconds its complete black.

Has someone the same problem and has a solution?

offical amd forum post: http://forums.amd.com/game/messageview.cfm?catid=454&threadid=169703&enterthread=y
 
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Brad Kuntz

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Feb 18, 2014
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tk421_tk421

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Apr 15, 2014
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I've had this same issue happen after an update (windows 8.1 update 1).

I believe the problem was related to the caching windows 8 does to enable the hybrid shutdown/startup capability.

I fixed the issue by doing a full reboot by executing the following command in the command prompt
shutdown -S -F -T 20 -C "Shutting down in 20 seconds"

Hope this helps someone else
 
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bezdar22

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Sep 1, 2014
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can u explain a little more coz i dont understand what u just said .. may be step by step will help..
i m having same problem.. trying to setup 2 monitor for the first time and windows isnt detecting my 2nd monitor
 
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MiniKat

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Oct 22, 2014
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hello all .. I'm posting what worked for me to fix my monitor issue after upgrading to windows 8.1

I have a 2012 Toshiba laptop/notebook with an AMD Radeon Graphics card and AMD processor. Prior to upgrading to 8.1 I had no problems plugging in my VGA cable and duplicating or extending to a monitor. I could use any of 3 different monitors I have .. an LG HD Flatron, DELL flatscreen and a Phillips flatscreen.

I tried for days upgrading AMD Catalyst drivers, window 8.1 driver/update, considered reverting back to Win 8 .. and many of the forums seemed very helpful .. and one hinted at VGA incompatibility (thank you because this got me thinking in the right direction) but nothing worked no matter what monitor I used it remained black even though it seemed that Windows recognized there was a monitor there.

Short answer .. I got a $40 HDMI to VGA adaptor (because the monitor I want to use, the LG, doesn't have an HDMI port) and it worked. There was one small gliche in that the monitor would flash black every 30 seconds. I fixed this by changing the Monitor driver from an Analog based driver to a Digital based driver that just happen to come with the monitor software.

I hope this helps anyone else who having these sort of problems.

I was very disappointed that neither AMD nor Microsoft posted this as possible solution on their support sites.
Cheers !

 
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TodKarlson

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Oct 24, 2014
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When I installed Win 8.1 Pro only one of my monitors was working and the Control Panel wasn't detecting the other 2. I was less than pleased with the answers I saw when I Googled about it. But then I restarted the computer and it fixed itself. So, before you go out to buy adapter or new video cards, SHUTDOWN & RESTART your computer.
 
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ssnaz

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Oct 29, 2014
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I was having an issue connecting my TV display to my laptop via HDMI cable with the error "another display not detected".

I found the solution in the following link.
http://

Now, finally my problem is solved. I found no hassles applying the given solution, was very easy and quick. Works like magic.
 
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Sketch Flare

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Jan 9, 2015
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Sup guy I don't know I spent like 300 buck buying 3 monitors and they are all seen as one but at least they all work the problem is they aren't extended they're just duplicated Great job microsoft wtf

 
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shickey

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Jan 20, 2015
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Thanks for this solution - it worked perfectly for me! For anybody who is as clueless as I am, you just open Command Prompt and type the complete line (bold above) as suggested, including the "Shutting down in 20 seconds"

Worked great - both monitors displayed correctly immediately, even during the reboot.
 
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Cameron Rodriguez

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Mar 7, 2015
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THANK YOU. Just spent 5 hours trying to solve this issue and this solution solved it. I was skeptical of typing anything into my command prompt, but it worked! I'm going to make a batch file to run this whenever I get this problem again. Windows should really fix this.

 
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Krialis

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Dec 17, 2013
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In case anyone is skeptical about the command or don't know what it means, I'll break it down for you.

The Shutdown command is the executable (.exe) that forces your computer to do a certain something like shutdown (-s) or restart (-r)
So here's how it goes:

Shutdown -s (Shutdown) -f (Full Force meaning everything you are running will be automatically closed without prompt **Save your stuff or you might lose it!**) -t (Time) 20 (seconds) -c (Message) "Your Message Here" <- This is displayed to the user and does not have to be written in.
 
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rezzew

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Apr 30, 2015
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For me the problem occurred after I did a "refresh" in windows 8.1 to resolve my booting up issues (laptop wouldn't boot). What resolved the issue was installing the proper graphics display driver. After doing this I saw 2 generic PnP display monitors in the device manager and everything was good to go so make sure you have the proper graphics drivers installed as this could be the root cause. Hope this helps
 
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argibird

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May 27, 2015
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So i recently install a game to my pc .I play on dual monitor so when i finished i unplug the second monitor and the first one was black.(out of range)When i plug again the second monitor the first was working as well.I find the problem and because i can read a lot of you having the same one so this is my answer.

GO TO catalyst>MY VGA DISPLAYS>PROPERTIES
and then fix your resolution.Many games change your resolution for you so make sure you check this one before go and buy another monitor or some cable
 
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argibird

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May 27, 2015
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4,510













So i recently install a game to my pc .I play on dual monitor so when i finished i unplug the second monitor and the first one was black.(out of range)When i plug again the second monitor the first was working as well.I find the problem and because i can read a lot of you having the same one so this is my answer.

GO TO catalyst>MY VGA DISPLAYS>PROPERTIES
and then fix your resolution.Many games change your resolution for you so make sure you check this one before go and buy another monitor or some cable
 
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Ronnie Morris

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Jul 3, 2015
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If you are using eclipse's External VGA Video Card, I Downloaded the Drivers for window 8.1 from http://www.eclipsetouch.com/support.htm
 
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TLDcomp

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Aug 11, 2015
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YES! Worked for me. Thank you for the added explanation about what exactly to type in the command prompt. (Note to anyone unfamiliar with command prompt: A quick way to get a command prompt is to search for it; move your cursor to the top-right corner of your screen and click on the magnifying glass icon, then type "command prompt".)
 
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jthiker

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Sep 18, 2015
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Thank you so much! I have spent way too many hours trying to find a solution to this. I will save this and put the sticky right on the errant monitor!
 
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zero_rut

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Jan 20, 2016
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4,510
i have the same issue
my machine have intel and NVIDIA card

"i try many time to re-install nvidia driver and change new version but cannot resolve this issue. then i change to new method. i change intel diver instead and get newer version. it work for me! "

*i fix it by:

- disable "intel HD Graphics diver"(not nvidia)
- install the "HD Graphics diver" with new version (download from intel website)
- restart your machine
 
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