My pc is having trouble booting. It can take about 30 mins to get it to boot, but when it dose it runs fine. When it wont boot i cant even get the bios screen up, I just have a black screen. I have tried reseating the memory , the chip,( amd athlon 1900+) all installed cards, different hard discs. And to my surprise yesterday my m8 came around to see me and he is haveing the same problem, we are both running xp pro. i am thinking that it is some sort of bios virus but Im not sure how to check. I would be very grateful for any help.