Hi,
I was wondering... did you by any chance ever get a can of compressed air and blow all of that shit out of your computer? If not, why not try that first. I had a friend that changed processors and a dust bunny got underneath the new proc. and gave strange errors. After taking out the proc. and blowing things out, then replacing the proc. it booted just fine. I suggest taking out ALL of the Dimms and all other expansion cards and THOUROUGHLY cleaning the mobo. This has helped in the past for me.
P.S. I have a KA7 (not the 100) and it is a great Mobo. Hope things work out for you.