Defragment Windows 10
Optimizing your drives can help your PC run smoother and boot up faster.
To optimize them:
Select the search icon or box on the taskbar and type defrag.
Select Defragment and Optimize Drives, from the results
Select the disk drive you want to optimize.
Select the Optimize button.
You should optimise all your drives but the most important drive to defragment is your system drive "C drive"