Detecting and repairing disk errorsYou can use the Error-checking tool to check for file system errors and bad sectors on your hard disk.
Open My Computer, and then select the local disk you want to check.
On the File menu, click Properties.
On the Tools tab, under Error-checking, click Check Now.
Under Check disk options, select both Automaticallyl fix file system errors and the Scan for and attempt recovery of bad sectors check boxes.