Lost My Windows 7 CD Do I need to buy another.

crnichm

Honorable
Aug 22, 2013
44
0
10,540
Alright I let my buddy use my windows 7 cd to reinstall windows awhile back. Anyways he moved before he gave me it back. Now my computer has a virus and I want to reformat and reinstall windows but don't have the cd. I have the key is it possible to reinstall windows without the cd?