http://forums.cnet.com/5208-6142_102-0.html?forumID=5&threadID=218013&messageID=2320320

At the least it looks like a XP REPAIR INSTALL for your issue. Sorry I can't offer anything more but your post lacks details (such as P2P use or what you think caused it) asked for by those words in RED you see each time you post.

Here's a few links about XP Repair Install.
http://www.google.com/search?hl=en&q=XP+REPAIR+INSTALL&btnG=Google+Search

This may not apply to you since you may not have a real XP CD. In that case you call HP to ask how to perform a repair install with their system.

Bob