B4 I do this, explain a little more to me, So just to clarify, click change product key, and type in your product ID?

i deleted it, because i thought it was a key gen for getting windows illegally

Oh sorry guys, I guess I probably didn't explain it well in the original post. Macrid, to be honest I've never done it personally on Windows 7 before. I think I helped a friend do it once, but I don't remember exactly how it goes although I'm pretty sure it is basically just entering your key again. The product ID that it shows on that screen and your key are different things though.

See that's what I thought, And that's why I didn't fuck anything up yet until
I made sure you knew what was up.

Its pretty hard to mess up a computer. You should be more adventurous. Also I believe if Windows thinks you're not using a valid key it might do some stupid crap like disabling things. Has it been nagging you about it?

A plethora of times. But I got rid of that bull shit by disabling it from popping in front of my face every 2 seconds.