Run chkdsk C: /F /Rchkdsk C: /F /R
from windows instalition dvdthe Windows installation DVD,
- Boot from Windows 7 dvdDVD.
- Press reapeir your computerSelect "Repair Your Computer".
- Choose your target system.
- In the recovery tool panel, choose command promptCommand Prompt.
- run chkdsk : /FRun /R
chkdsk <your target drive>/: /F /R
When you run check disk from instalation dvdthe installation DVD, windows will try to recover corrupted files and fix them.
I tryhave tried it and it works every time.