and you have the COA key, you could use that to reinstall. You need an XP install disc of the same version (e.g. Home Premium, Pro, Ultimate) as what you had installed. If you want/need to buy a disc, Amazon has them starting at $75. See this link
http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=%22windows%20xp%22
I don't think MS is selling XP any more because they seem to think Windows 8 is the answer for everything. To say I strongly disagree with that philosophy would be an extreme understatement!
Good luck.
My HP laptop crashed,it turned out to be a bad hard drive.I did not back up,I know bad.Now I have no Windows xp to reinstall.Will Microsoft give or I guess sell me a windows xp to install.Since my original was a legal copy,I dont understand why I cant get another free.

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