When you boot the computer and you may get the error ” Windows
- Boot the computer with the help of Xp disk to the WINRE ( i.e Recovery Console or command prompt)
- Run the chkdsk /f
- Run bootcfg /rebuildbcd
- Run bootrec /fixmbr and then bootrec /fixboot
- Type Exit
- Restart the computer
You will be successfully booted to the Desktop and the Computer would be up and running fine.