Windows XP Re Install , Repair

Warning : Pl do efforts to get your backup, no resposbilty to any loss of data or software.
Below describe option is best way to recover your system is system is not booting or boot with some error.

1. BIOS Setup change boot order to first boot from cdrom
2. Insert XP CD which version you have all ready installed in your system.
3.When you see
To setup Windows XP now, press ENTER.
To repair a Windows XP installation using Recovery Console, press R.

To quit Setup without installing Windows XP, press F3.

4. Press Enter to start the Windows Setup.
(do not press R to "To repair a Windows XP installation using the Recovery Console")
5. Accept the License Agreement and Windows will search for existing Windows installations.
6. Select the XP installation you want to repair from the list and press R to start the repair.
7. Setup will copy the necessary files to the hard drive and reboot. Do not press any key to boot from CD when the message appears. Setup will continue as if it were doing a clean install, but your applications and settings will remain intact.