Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Dual monitor Problems

23 Aug 2014   #1

Windows 7 Ultimate x64
Dual monitor Problems

Hi there,

So the problem as stated in the title is that i can't get both monitors to work.


Graphic Card: ATI HD 5850
MB: ASUS m4a79t deluxe
Monitor 1: lg flatron w2253TQ
Monitor 2: panasonic tx-l19x10e


So my system as been runing for 4.5 years without any major issues (Including both monitors working fine).
One day suddenly the PC didn't POST at all and i went full yolo on understanding the root of the problem (without success). I tried almost everthing during 3 days (testing each hardware piece, checking the connections, reseted the bios, etc...) and somehow when i was about to take the pc to someone with hardware pieces to test it i took a last try to turn it on and...boom the pc cameback to life!!! Don't know how i did it but i did and now the pc is working for more than 1 week without any issues.

The Problem:

Well before this problem i had dual monitor without problems, after the problem the 2nd monitor doesn't give image at all. The second monitor is connected through a Vga to Dvi adpater and i suspected that somehow the cable was the problem because the pc detects the monitor but doesnt display any image on the 2nd monitor (even if i take a PRTSCN both desktops show up in extended mode) so i got my hands on a new VGA cable and... that wasnt the issue... then i tried a hdmi-hdmi cable and nothing... i tried the monitor on a laptop borrowed to a friend and nothing... both dvi ports work fine since monitor 1 works on both slots so it all comes to either the bios settings/software or the monitor simply died ( Althrough the TV still works on the 2nd monitor since it's both TV/PC ).

Next Step:

Well my next step will be trying another monitor on this system but i will not be able to do that for a couple of days and before i give up on the current monitor i want all the help i can get here

Thanks in advance for your help!

My System SpecsSystem Spec
23 Aug 2014   #2
Mellon Head

Win 7 Pro x64/Win 10 Pro x64 dual boot

If the monitor didn't work on another computer, it has likely died. The TV portion of the monitor uses a different pathway to get its signal (cable => tuner => screen), so that might be why it's working. The monitor may have lost its "Monitor in" input and that's why it isn't working.

You'll know for sure when you try another monitor on it in a couple of days. Does the 2nd monitor work on any output from the video card with monitor 1 disconnected?
My System SpecsSystem Spec
23 Aug 2014   #3

Windows 7 Ultimate x64

Hi Mellon,

Unfortunently i tried that already and the monitor didn't work by himself on any of the outputs.

The probability that the pc output died is very high atm but it's also strange because when the POST problems happened the pc still randomly POSTed like 4 times but as soon as i turned off and on the pc would stop POSTing again (meanwhile the dual monitor was working). It was after i reseted the bios that the dual monitor stopped working (but i'm pretty sure that the reset didn't solve any problems) and for that reason i thought that the bios settings were the reason for the dual monitor stopped working.

Since i usually don't mess arround with the bios settings i was expecting that someone here could confirm that i had all the correct bios settings.

Thanks in advance!
My System SpecsSystem Spec


 Dual monitor Problems

Thread Tools

Similar help and support threads
Thread Forum
Dual Monitor Problems using Gigabyte 650 ti
After trying to configure for a dual monitor setup, can only get the monitor using the vga connector to work. The other connector options on this card are both dvi dual link stubs which will not work with either monitor if i switch either monitor to them. Any ideas anyone please?
General Discussion
Dual monitor problems
Hello all! I have a big problem in connection with dual monitors. The other day I found a "Samsung SyncMaster 152t" around the house. I decided to connect it to my comp next to the already used "Samsung SyncMaster 913n". I tested both alone, and both worked perfectly. Then I bought an adapter as...
Graphic Cards
Windows 7 Dual Monitor Problems Please Help!
I am currently using an external monitor, it is an HD cinema display for Apple computers that is hooked from a DVI to HDMI and then into my laptop. I am using an Asus laptop with Windows 7. My dual monitors have been working fine recently until i installed this 64 bit epson scanner software. When i...
Hardware & Devices
Dual Monitor problems - replacing 2nd Monitor
Hi, I had a two monitor setup Samsung 2333SW(DVI) + Philips 19B(VGA) running without any problems. I have now replaced the old Phillips with a Samsung P2770H, connecting the P2770 to DVI and switching the 2333SW to VGA(Analogue). Updated the drivers for both (rebooted) and when I look in...
Graphic Cards
Dual Monitor Problems
I was running win7 beta on this exact same computer setup back in the beta days. Everything worked perfectly then. Once I upgraded to my x64 retail win7 copy, my 2nd monitor went wonky on me. I know the monitor is not at fault, I have tested both extensively, both monitors work just fine on...
Graphic Cards
Dual Monitor Setup problems
On my Windows 7 partition I am unable to use my laptop screen and my 27" LCD Samsung TV as a monitor simultaneously. This was not an issue on my XP partition. I have updated drivers on my video card to no avail. My TV is connected via a VGA cable. If this cable is connected when I turn my computer...
Graphic Cards

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 14:38.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App