How to repair a Windows XP installation without formatting your computer and loosing your files

Repairing an installation of Windows XP will not wipe all of your files like formatting will. Formatting Windows XP cleans your computer of absolutely everything that you had on your computer, and therefore this fact alone makes repairing a good option to try when fixing an error. If you suspect that there is a problem with the Windows system files you can simply try to repair it before resorting to formatting.

What you will need to Repair a Windows XP installation:

1. An original Windows XP cd. The one you originally installed. (Not an OEM)
2. A COA sticker with a serial number that matches your installation.

How to Repair a Windows XP installation without formatting your computer:

1. First you must put your Windows XP CD in the drive.
2. Then restart your computer.
3. When it says press any key to boot from cd, Press any key on the keyboard. (Go to step 6)
4. If it doesn't ask you this then restart your computer again.
5. Go into the BIOS settings of your PC, usually by pressing the F1, F2, F10, or maybe the delete key. If you are not sure watch the screen at startup and it will say "To enter setup press.......". You have to be quick and press it. If you miss it restart again. Once you are in the bios you have to change the boot options. You have to make your cd rom the first boot option. Save and exit.
6. A blue screen will appear and you are on your way..
7. Press Enter to setup Windows XP now. Do not choose to Repair yet.
8. If there is a copy of Windows XP on your computer setup will find it.
9. See below where it says C:\windows "Microsoft Windows XP Professional" Make sure this is selected. It may say Windows XP home also.
10.