I start my computer

I start my computer - Scandisk starts running even I proper shut down the PC last time
Do as following:
* Open regedit and goto -
Code:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager
In right-side pane, change the value of BootExecute to:
autocheck autochk *
* If the above trick doesnt help then give following commands in Command Prompt:
chkntfs /x drive_name
for e.g., if ScanDisk runs automatically for C: and D: drives, then give following commands 1 by 1:
chkntfs /x C:
chkntfs /x D: