Defragmenting your hard drive is a simple way to improve disk access and improve the overall zip of your PC. The only downside is that it can take several hours to run. Also, it’s not something that most people remember to do on a regular basis.
This will set your computer to automatically perform a complete defrag of the C: drive each day at 11:00:00 PM (23:00:00). It does this by creating a scheduled task called Defrag Drive C. It will run this command under the computer’s system account, so you don”t even need to be logged in for it to work.
schtasks /create /tn "Defrag Drive C" /tr "Defrag c: /f" /sc daily /st 23:00:00 /ru "System"