monitor goes blank after a few seconds

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jbj1162

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Dec 23, 2010
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Hi I have a Dell™ OptiPlex™ 745 with a Galaxy Nvidia Gforce GT240 pci express video card and a sceptre x20 flat screen monitor all the sudden after working on computer for a couple hours monitor went blank so i tried turning it off and on again and it stayed on for a few seconds and went blank again now thats all it does I tried monitor on different computer and it seemed to work fine so I'm guessing my video card went south on me ? any ideas ?



Thanks jbj1162
 

crjdriver

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Joined
Jan 2, 2001
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42,270
My first thought would be a failing pw supply. You would need to swap parts with known good units to test. This system has onboard video. Have you tried using the onboard video to troubleshoot?

Next if you installed that video card and used the same pw supply that came with the system, you are asking for problems. The oem dell pw supply that comes with a system like yours, just cannot reliably pw a real video card.
 
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