A sector of a hard drive is the smallest divisible unit of the physical drive, at
least as far as storing data is concerned.
As a hard drive fails, one sector after another becomes unusable.
Fortunately, all the data in a sector may not be permanently lost. If a failing
hard drive has prevented you from starting your computer, the damaged
data that's causing the problem might be recoverable from within Recovery
Enter Windows XP Recovery Console -> The Recovery Console is an advanced
diagnostic mode of Windows XP with special tools that will allow you to find
and recover bad sectors -> When you reach the command prompt type
chkdsk /r -> press Enter ->
The chkdsk command will scan your hard drive for any damaged sectors.
If any data is readable from any bad sector found, chkdsk will recover it.
Take out the Windows XP CD, type exit and then press Enter to restart your
Assuming bad hard drive sectors were the cause of your problem and chkdsk
was able to recover data from them, Windows XP should now start normally.