I have a toshiba Satellite that won't let me in. There are three accounts on it and if I try to get into any of them a notification pops up saying "This copy of windows must be activated with microsoft before you can log on. Do you want to activate windows now?" So if I say yes then it starts to log in but will always stop and freeze and I won't be able to do anything, even turn it off without unplugging it and if I say no then it will take me to the previous screen.