Clean computer?

[Thenothing]

Just wondering is there a way to delete every single thing on my computer like a clean installation of windows but without using the window disc since I'm worried that it would deactivate the key. And I'm using window 8.1

[d3sl91]

Just wondering is there a way to delete every single thing on my computer like a clean installation of windows but without using the window disc seens I'm worried that it would deactivate the key. And I'm using window 8.1

Yes, do a Reset.

http://windows.microsoft.com/en-us/windows-8/restore-refresh-reset-pc