A couple months ago, I had to format my sisters computer, and the license number on the bottom of the laptop wasn't working with the activation thing so rather than sort it out with microsoft I just used some crack thing I think I got from torrents. This worked fine, windows update worked fine, everything seemed legit. Now out of nowhere, upon rebooting this morning it won't let you login without activating which is not working. I can get into it via safe mode but I have no idea what to do. Any thoughts? I'm hoping I can just crack it again somehow, but if not I guess I have no choice but to wipe it.