CHKDSK can not run

[KCav45]

Backup failed - Error MFT corrupt, run CHKDSK/f. :sarc:
Typed CHKDSK.f on the Command line; CHKDSK cannot run because volume is in use by another process.Would you like to reschedule this process the next time the systemstarts? (Y/N). Entered Y and it replied This Volume will be checked the next time the system restarts.
Restarted system and CHKDSK did not run.
What should I do? :sarc:

 

[Megahertz07]

Run chkdsk c: /f
Would you like to reschedule this process the next time the system starts? (Y/N). Enter Y and it the C: volume will be checked the next time the system restarts.

 

[KCav45]

when I enter CHKDSK/f on the command line for drive C it does not run - it says it can not run while drive is in use if I click Y it will run when I reboot. I clicked Y and restarted the system and it did not run.

 

[samuria]

Boot from a install dvd then choose cmd prompt try there or press f8 at start and choose cmd prompt and try