This is the second thread on this problem. I've had a problem ever since I built this computer in september. The computer will randomly crash to a blue screen (windows XP pro) and I have a lot of corrupt files. Today I installed a new mainboard, because I thought it was the source of my problems. I also low-leveled formated the drives. Afterwords it took no less than 10 tries to get windows installed, and I had to fight through many "cannot read/write" errors and more bluescreen errors showing problems with files such as "ntfs.sys" and "win32.dll", along with random address errors like 0x000024 or whatever. Once I got windows installed, I cant even download the smallest driver file off the net without it giving an error that the data is corrupt. It happened to everything I downloaded. Its also not detecting a harddrive. I've already tested my ram with memtest and it showed it was fine. I've tried an IDE drive, with the same problems. Before the format, half the times I loaded windows it said "bad direct sound driver" and couldnt find my sound card. Here are my system specs; Athlon 3200+ XP Asus A7N8X-E Deluxe mainboard 1 gig (two sticks) kingston 400fsb ram Nvidia Gf4 MX5200 vid card Creative Audigy2 ZS platnum Two Seagate 80gig SATA drives ATI TV Card Any help would be greatly appreciated, as I now can not use my computer at all.