|The only thing that was pirated was the product key. All you had to do was change the "illegal" key to a legal one...you did NOT have to reinstall Windows. In fact, if you knew the trick to make your pirated copy "legal", you wouldn't have had to buy anything. Google is an amazing tool, but you have to know how to use it.|
Since you already "wasted" your money & you can't return opened software, I suggest you wipe the drive & do a clean install. But before you do that, were you having some sort of problem that prompted you to run out & buy a copy of XP (other than your copy was pirated)? If you were having problems that you thought were related to the pirated copy, you *may* have thought wrong. Obviously a hardware issue can't be fixed by reinstalling software.