Recently my computer has been freezing up and I'd have to resort to manually restarting my computer. Just a few hours ago it froze up again and this time Windows wouldn't boot after I restarted. So out came the XP disk and I formatted my hard drive. No big deal, I have everything backed up. Anyway, I'm wondering if maybe this wasn't just an OS error or if maybe there's something wrong with my RAM. Problem is I don't want to go out and spend $$$ buying more memory if that isn't even the issue. Is there any sure way to diagnose this problem???