No i did not format the entire harddrive, only the partition where windows was installed on. the other one only holds data, that i'm not happy about losing.
with windows xp i had this problem with my gf's laptop. that was because of a virus.
that's why i reinstalled windows, and after 2 days i got the same problem.
also i'm using an older bios version.
i have the update file's already but i'm scared to use the tool in safe mode of window's and screwing up my motherboard.
Memory test is selfcontained in the motherboard. and it's saying it's ok.
harddrive test with ultimateboot cd?