I got a secondhand computer about a year ago with XP installed. It had a few problems, plus I found I did not like XP. The easiest way I found to fix XP is:
1. Format your drive.
2. Get out your old Windows 98 disk.
3. Install Windows 98.
(Of course a better solution for point 3 is to install a proper OS such as Linux (such a shame there is no PC equivalent to Workbench/Kickstart) but unfortunately I need to keep a couple of machines that can use Windows software.)
