I had problem with Windows 8.1 high Disk usage so in order to solve , searched forums. A voted answer suggested to use CHKDSK command as follow:

• run command prompt and as administrator

• type code snippet below:

  CHKDSK /f /v /b C: (I can not remember accurately)

CHKDSK printed : can not run CHKDSK right now , would you like to schedule C drive to be checked next time windows starts? (Y/N) my response was "Y" ,please ! Following this suggestion not only didn't solve my problem as expected but also added another one ! The next time system booted, after windows authentication I just could see a black screen and mouse pointer. So I force shut downed the system and tried to start windows again. This time , windows got stuck in Scanning and Repairing on 22% for around 3 hours so I got tired and forced shut downed again.

• is CHKDSK source of Scanning and Repairing problem or they are discrete ?
• is there any hope to overcome this problem without re-installing windows ?
• can any one else run CHKDSK on newer versions of windows without problem?
• is CHKDSK effective but inefficient ?(it finally get to end but will take a long time) If yes, how much time does it take?

I also have Linux Ubuntu 14.04 installed along side windows.