Windows startup after a sudden shutdown leads to an annoying feature chkdsk. It automatically checks the entire drive for any infected files. This checking can be skipped by pressing any key before it starts during the blue screen which says:
“Checking file system on C:
The type of file system is NTFS.
One of the drives needs to be checked for consistency. You may cancel the disk check, but it is strongly recommended that you continue.
To skip disk checking, press any key within 10 second(s).”
                  
The problem is that skipping is only a temporary option and though it is highly recommended, this chkdsk can be disabled manually. Even if the checking is skipped, it would prompt again during the next windows boot up.So here are the steps to disable automatic disk-check option:
Open command prompt and type following and press enter
   chkntfs/x c:
This will disable the disk checking option for drive c
Similarly for other drives you can type
   chkntfs/x c: d: