My laptop is running Win 8.1 which was installed by the guy at the store ,so I'm guessing its pirated. I've been getting popup messages to 'Activate Windows' . Since I don't have the product key I ca't do it. I found out I can use activators to generate keys. Is this safe? I just want to change my account name ,picture and add a password. I've read online that these keys/activators may have trojan or some kind of malware.