Motherboard not putting out any video

[Pegun]

I work for an ITS Desktop Engineering Team and none of us have ever heard of anything like this, maybe you guys have.

I have a computer which I build 3 years ago. The motherboard is an Asus p4s800d-x. Last week it stopped putting out any video from the AGP card. OK, I replaced the card with a pci card for testing. That worked for a night and then stopped.
-The monitor is plugged in and the backlight lights up. The monitor has been tested on another system and another monitor was also tried
-There is no on board video
-There is no POST signal that anything is wrong
-Windows loads because I can hit TAB-TAB-Enter and log into windows (no password)
-Another AGP card was tested and same result.
-Newest stick of ram was removed on suggestion reading on other forums.

Is it possible for the mother board to fry individual pci and AGP slots? I can't test whether any of my other peripherals work so they have all been taken out.

 

[myocardia]

Originally posted by: Pegun
Is it possible for the mother board to fry individual pci and AGP slots?

Yes, it's not rare at all for an AGP slot to fail. They used to fail all the time, especially on nForce2 boards. Do these cards still work on other systems? My best guess is that your PSU may be killing them, with insufficient voltage, especially if it's anywhere near as old as your motherboard.

 

[Pegun]

I had a power supply burn out a few weeks before that so I used a stock Dell power supply that was, indeed, as old as the motherboard. I'll try them on another system within a few weeks I guess. I don't have one currently