i have found and tryed a few trials versions and the ones i tryed say i have 180-800 errors and thay only toke 30 or so out and thay wont delete any more unless i pay for it so is there one out there that will clean the rest of my registry iam using windows xp home thanks all

I have a problem with "debug assertation" errors coming up and thay are affectng my pc.

So I want to do a repair but i'm not sure whether doing so will clean of all my files and put a fresh copy of xp on my pc or just repair some of the system files leaving my installed software intact.

Help is appreciated.