Usually, when this is the case, I figure the card is overheating, bad, or the Power supply is going out.
So I ran down my list of things. Mind you this is an old AGP system.
I tried two different AGP cards, an X1600 pro, and an older X800 (ATI)
Both had artifacts. Tried again, with switching the VGA cable. same thing.
Tested both cards on an even older system, and they both where fine, so I'm thinking the new PS is going bad. So I take it out, and move it from system to system, and they all boot up. So I think, I have an ancient 32 mb voodoo card, and I try it on the system I was initially working with, and no problems. So I know it's not the board, the PS, or the cards.
Is it possible to have an AGP slot itself go out on a board, but leave everything else ok? Kind of at a loss here guys.
Stephen