I have a pc I'm trying to fix. Its a Pentium 4 3.0 ghz, 2gb corsair memory, 7600gt, windows xp. Its saying disk read error at boot sometimes and sometimes it boots normally. When it does get in sometimes it freezes up while running programs in windows and i have to manually restart, its had to recover from a serious error once. It seems to work better at my house than at my clients for some reason. I have had the same errors here but it runs more smoothly and longer here. Ive reinstalled windows xp pro sp3 twice, replaced the cmos battery, ran western digital hard drive diagnostics quick and extendended tests, both passed. I also ran memtest and passed. Thank you.