Most modern Windows operating systems will defrag your computer automatically, but you can do it manually if you have Windows 7, 8, 10, or Vista.

Defragmenting your hard drive can be good or bad for the device depending on what kind of hard drive you're using. Generally, you want to regularly defragment a mechanical Hard Disk Drive and ...

Here's what you need to know. If You Use a Solid-State Drive: No Defragmentation Necessary If you have a solid-state drive (SSD) in your computer, you do not need to defragment it.