1. Erase all files with a disk sanitizer like Wipe Drive permanently.

2. Put Windows installation CD into CD drive. Ensure that there are no other disks in PC, and restart.

3. On "Welcome to Setup" screen, hit Enter to set up Windows.

4. Push C key to carry on setup.

5. Push F8 key to agree to license.

6. Push C key to make a partition.

7. Enter size of partition, or push Enter key to utilize maximum size.

8. Choose "New (Unformatted)" choice, and hit Enter key.

9. Choose NTFS or FAT file system.

10. Just follow prompts format the hard drive in Windows XP keep on Windows installation.