Hello, if you are having problems activating Windows and entering the key, only a hard reset can solve the problem, do as described here https://howly.com/chats/my-computer-is-disabled/. You need to hold down the shutdown button for a few seconds to reset, do this a few times and the problem should go away. If that doesn't work, it's probably cheaters and you need to reinstall Windows. Good luck with your problem and I hope you find a quick fix without going to a service.