Dick said:
Try this from Fred Langa: Non destructive XP rebuild instructions.
http://langa.com/newsletters/2006/2006-06-19.htm
It's called a win xp repair. It's not a new discovery.
google windows xp reinstall , and the first link that comes up, isn't
a win xp reinstall, it's a win xp repair.
http://www.michaelstevenstech.com/XPrepairinstall.htm
It is on the win xp setup boot CD. Most techies would've tried it out
and so learnt about it within a month of first using win xp.
the OP should've done a repair or if that doesn't work, a reinstall,
long ago.
back up data first. (though a repair shouldn't lose any data),
I think any data outside of \windows and \documents and settings,
should be safe. i.e. data in a directory not created by or related to
windows. I might not bother backing that up if it was my computer.
The OP was right to post such a long explanation.
MVPs like to think they are donating their time to personally helping
the original poster. The reality is that many posters such as the one
that started this thread, are documenting problems, whose solutions may
help many people.
People posting replies are contributing to that effort,of helping many
people, including themselves. Adding to the archive of stored
solutions.
If a reinstall were to fail(during or straight after), then it could be
a HW problem.Diagnose/troubleshoot that.