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Windows 7: Dual Monitor Problem - Only 1 monitor working


10 Jul 2010   #1

Windows 7 Professional
 
 
Dual Monitor Problem - Only 1 monitor working

I have recently built a new box with a clean install of Windows 7. Initially I only had 1 monitor and things worked fine. I decided to add a second monitor and that is when the problems started.

When the system boots both monitors display all of the bootup information and and both monitors display the Windows 7 Startup screens. This tells me both monitors and connections are good.

Once Windows loads only monitor 2 has a display on it. Monitor 1 is blank. I have check and both monitors are running the same, and latest drivers. I have gone into windows and it shows two monitors, but I can not get a display on monitor 1.

This is the first time I have had dual monitors so it may very well be a user error, but I am pretty computer literate.

Any guidance would be appreciated.

Thanks in advance.

My System SpecsSystem Spec
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10 Jul 2010   #2

Main - Windows 7 Pro SP1 64-Bit; 2nd - Windows Server 2008 R2
 
 

Go to Control Panel>>Display and then go to Change Display Settings. Under Multiple Displays go for "Extend these displays".
My System SpecsSystem Spec
10 Jul 2010   #3

Win7 Enterprise, Win7 x86 (Ult 7600), Win7 x64 Ult 7600, TechNet RTM on AMD x64 (2.8Ghz)
 
 

Are you using 1 video card with multiple connections? or Dual video cards ?
My System SpecsSystem Spec
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10 Jul 2010   #4

Windows 7 Professional
 
 

1 Video card with 2 DVI outputs. Radeon HD 5850
My System SpecsSystem Spec
10 Jul 2010   #5

Main - Windows 7 Pro SP1 64-Bit; 2nd - Windows Server 2008 R2
 
 

Is it set to "Extend these displays"?
My System SpecsSystem Spec
10 Jul 2010   #6

Windows 7 Professional
 
 

Problem resolved....I hope. I re-installed the drivers again and then power-cycled the PC as reboot did nothing. 2 monitors are not visable.

Thank everyone!
My System SpecsSystem Spec
11 Jul 2010   #7

Windows 7 Ultimate 64 Bit
 
 

So you have your dual screens running now?
My System SpecsSystem Spec
11 Jul 2010   #8

Windows 7 Professional
 
 

Yes all is working.

Thanks
My System SpecsSystem Spec
11 Jul 2010   #9

Windows 7 Ultimate 64 Bit
 
 

Excellent, enjoy the extended real estate :-)
My System SpecsSystem Spec
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 Dual Monitor Problem - Only 1 monitor working




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