 To scan the system disk for errors and fix them in a Windows operating system, you should exactly the common check disk in the command prompt started as administrator. As the drive letter OO for the disk, you want to check for errors. Then you should enter the parameter F, which makes errors to be fixed automatically, and the parameter R, which checks damaged sectors and tries to recover information. Type Y, press Enter and see this message. This volume will be checked the next time the system starts. Scanning and repairing drive C. It means that the command check disk is working. After the process is over, you will see statistics on the scan data, found errors and damaged sectors.