How do I erase my Windows XP operating system?

Scroll down the list of installed programs until you find “Microsoft Windows XP”. Double-click “Uninstall Windows XP” to start the uninstall process. Click “Yes” when asked if you really wish to uninstall Windows XP.

How do I wipe my Windows XP computer before recycling?

The only sure way is to do a factory reset. Create a new admin account with no password then login and delete all other user accounts in Control Panel. Use TFC and CCleaner to delete any additional temp files. Delete the Page File and disable System Restore.