Losing Video Signal

[olds]

I have a friend's K6-2/350 on an Asus P5A with a Trident 4 MB AGP video card. After appx. 15 minutes of use, it loses the video signal. The screen blanks, a cursor flashes in the top left corner, the monitor LED stays green and the hdd still spins. I have tried a different AGP card, it had the same problem, I tried a PCI card which would give no signal. The BIOS, video and Miniport drivers are the latest. I went as far as to format the hdd and reinstall everything fresh. Temps are around 40C and the OS is windows 98. I am stumped, any ideas?

 

[jamesbond007]

Could it be the monitor?

How about a Standby option in the BIOS? Maybe you enabled some Power-Saving features?

Those are what I'd check first.

Good luck!

 

[olds]

Thanks, The monitor works on another machine. I also disabled all power saving features.

 

[jamesbond007]

Have you had this system for a long time?

Maybe it's dying. (highly doubt it)

Maybe it's a PSU issue?

<<Puts on thinking cap and resumes 'The Thinker' position>>

 

[olds]

Thanks, it's a friend's system. She bought it 2.5 years ago. When the video dies, the machine is still running. It died in the middle of upgrading from IE 4.0 to 5.01. I let it continue to run for an hour (dial up) with no video signal. When I restarted, the browser was upgraded. I tried an Antec 300 watt PS, I have I also tried different memory, I have run it with nothing but memory and a video card (at the BIOS screen), it never lost signal. It only happens when it is being used for something.

 

[jamesbond007]

I'm assuming you've checked the Power-Features in Windows 98 as well?

Maybe it's an OS issue. I know it wouldn't be the fastest, but give Win2k a try on there.

How about the screensaver? There is an option for a blank screen.

 

[olds]

I have all power features (BIOS and Windows) , screen saver and background turned off. It bugs me that Device Manager would see a PCI video card that I put in there but it there was no video signal to the monitor. I am beginning to suspect the mobo.

 

[rogue1979]

Alot of socket 7 boards have an issue with adequate voltage to the AGP slot. However, this is usually with a late model high performance video card, not 4MB of Trident. Try putting in a cheap PCI video card and see if that cures the problem.

 

[jamesbond007]

He already did!

I tried a PCI card which would give no signal.