Cleaning Up The System Volume Information From Viruses

Right click on My Computer select the Properties Option.
Go to the System Restore sub menu.
Deactivate the Turn off System Restore on all drives and validate by clicking on the Ok button.

A message will inform the removal of all existing restore points.
Confirm with "Yes".
Reactivate the Turn off System Restore on all drives option and create a new restore point.
Your problem should be over.