How to Run Chkdsk for Windows 7
Windows 7's "Check Disk" utility (otherwise known as "Error-Checking") inspects your hard disk(s) for corrupted sectors as well as damaged data. It attempts to make a full system recovery if such sectors and files are not heavily corrupted, or presents you with a detailed report in the event they are. Running the "Chkdsk" applet for Windows 7 may be accomplished through various efficient steps.
Click the "Start" menu and launch "My Computer." Right click the hard disk in question and launch the "Properties" menu.
Browse to the "Tools" tab. Click "Check Now" within the "Error-Checking" field.
Enable the "Automatically fix file system errors" checkbox. Also, enable "Scan for and attempt recovery of bad sectors." These options will attempt to recover any corrupted data as well as bad hard disk sections.
Click "Start" to initialize the procedure. In the event your hard disk is in use, Windows 7 will ask if you wish to check for hard disk errors the next time your computer is restarted. Click "Schedule Disk Check" to reschedule this procedure for a later time.