First post, by avxstudios
Recently picked up a bundle of old cards, inc a Matrox M3D, Voodoo 3 3000 and a Voodoo 5 5500, the M3D worked as is, the Voodoo 3 3000 worked after replacing two caps that had been knocked off it, and the Voodoo 5 5500 had several 100nf smd caps knocked off it which have been replaced, and new fans installed (didn't have any when I got it)
Problem I'm having is that VGA Bios, and system Bios display perfectly fine, but in windows I'm getting vertical corruption, during the Windows 98 startup the corruption seems to be in a fixed position every time, in windows prior to installing the driver the vertical lines seem fixed but cursor movement causes additional corruption around where the cursor has been.
Things get a lot more corrupted if you install the drivers, as shown in the last picture.
My gut feeling is that one of the ram chips is dying/dead, but if anyone has any other ideas, I'd be happy to hear them.