Time for a format!

You don't need any discs to format a pc on XP. Restart your computer, there will be a message telling you to press a button for more options (Usually F2 or Alt + F10 , or some other stupid combination)

The option to format your PC should be in there.

__________________
I Beat Anorexia.

If I have helped you, please consider donating a little cash to Cancer Research UK