If you had all sorts of hard disk errors and are getting BSODs all the time, there's probably something else wrong, like a bad hard drive or bad hardware. Windows XP usually isn't suicidal.

Even if there isn't a hardware problem, it sounds like there is something terribly wrong with your system. Personally I would recommend a format and a fresh install of Windows. Then if that doesn't resolve it, you'll know it is a hardware problem.

I should ask though - when did these problems (the BSODs) start? And have they been fairly regular? What did they say? Is your computer at least semi-working right now? How old is the computer? What motherboard is in it? What kind of processor? Hard drives?