Check Disks (Harddrives) for Errors.
An individual can initiate this command both while Computer is running, or at system startup through F8 as if one was going to use Safe Mode. An individual needs to type CHKDSK into a Command Prompt, this will scan all Hard Disks (Hard Drives) for Errors; or Bad sectors. Allow the computer to scan and then attempt to fix any errors if system allows. This does not always fix Errors, or Bad Sectors; however it is a good attempt to keep ones system running.
1.) Click Start type in CMD into the Run field to open up Command prompt, once Command Prompt is opened type in CHKDSK.
2.) At startup press F8 to bring up Safe mode options click the option for Command prompt do the same as above.
3.) While running CHKDSK in Command prompt the user can type CHKDSK /F to try fixing any files the system will fix.
If I have left any information out please feel free to add it in the comments. Thank you.
Below are some screenshots of the Command Prompt with CHKDSK Commands.