Many times our windows file get corrupted, mainly due to viruses, we can easily fix them, For that you Requirement Windows xp cd.
Here is the Trick on how do it.
1. Place the xp cd in your cd/dvd drive
2. Go to start
3. run
4. type "sfc /scannow" (without ")
Now sit back and relax, it will load and fix all your corrupted file on win XP.