After serious system problems it's often necessary to wipe your Windows XP system clean and start over from scratch - a procedure referred to as a "Clean Install". This guide is broken into four parts for a total of 34 steps and will walk you through every part of the clean installation process.
The most important thing to realize before performing a clean installation of Windows XP is that all of the information on the drive that Windows XP is currently on (probably your C: drive) will be destroyed during this process. That means that if there's anything you want to keep you should back it up to a CD or another drive prior to beginning this process.
Some things to consider backing up hat usually reside on the same drive as Windows XP (which we'll assume is "C:") include a number of folders located under C:\Documents and Settings\{YOUR NAME} such as Desktop, Favorites and My Documents. Also check these folders under other user's ...