Take your XP disk and put it in the CD/DVD drive.
Can you get into the BIOS? If so, change your boot options so that the 1st option is your CD/DVD drive, not the hard drive.
How to get into your computer's BIOS - http://www.cyberwalker.net/faqs/reinstall-...enter-BIOS.html http://www.hiren.info/pages/bios-boot-cdrom
Save the changes made in the BIOS, following the instructions which are onscreen. The system will automatically reboot.
After the reboot, a prompt may appear onscreen (near the bottom) which says (in effect): Press any key if you want to boot the CD. Press any key.
If all goes well, the XP CD will start to load/run.Eventually, you will see a screen asking you what you would like to do. Press the ltter R on your keyboard to proceed to the Windows Recovery Console.
As you progress to the Recovery Console you may be asked which partition you would like to boot into. Type the number associated with the partition containing your NTFS partition (1) and then press enter to continue.
You may be asked for your administrator password. Simply hit the Enter key.
Type the following (without the quotes) "chkdsk /r" and then press Enter.
This procedure may take a while depending on the size of your drive and problems encountered. It will look for the errors on your drive and repair them. When it completes, you will be back at a command prompt.
Type "exit" (without quotes) and hit Enter. Remove CD.
System will reboot. If you did not remove CD, don't fret. Same screen as before will come (Press any key if you want to boot to CD.) This time, ignore it.
If chkdsk was able to fix whatever was wrong, system should boot into XP.