HERE IS THE
SOLUTION NO1.
>HOPE YOU HAVE A WINDOWS CD (TO THE SAME OS WHICH ALREADY INSTALLED )
>GO TO BIOS SET CD AS THE 1ST BOOT DEVICE)
>BOOT FROM CD
>PRESS "R" WHEN PROMPTED IN THE WINDOWS SETUP
>THE RECOVERY CONSOLE WILL BE LOAD.
>USE COMMAND THIS COMMAND IN THE PROMPT
>chkdsk C: /F /R
or...