ZachWS :
I want to format my SSD because I was careless with my data and it has really slowed down but I'm afraid that if I do I wont be able to use my Windows 10 key to install windows again. Is there anyway I can tell windows that I want to deactivate the key and use it again?
Windows 10?
A full wipe and reinstall on the same drive, in the same system...has zero effect on your license key.
Start the install. When it asks for the license key, select "I don't have a product key" at the bottom of that window.
Continue on.
When the system goes online later, it will activate itself.