Why I can’t login my Lenovo

Are we dealing with a laptop or tablet ? Either way we want to clear the boot memory to get a clean start up so to do this we want to drain all power from the device . . If were on a laptop remove the battery and power cord and once you 've do this then hold the power button down for 60 seconds . Then replace the battery and restart the computer . If your battery is internal then just remove the ram from the laptop and leave it out for a few moments. This will allow for a clean boot If its a tablet then simply disconnect the battery for 5 minutes or so. This will do the same thing . If this brings no joy then lets boot into safe mode and see if were dealing with a computer virus . for this I will need to know the exact make and model of laptop or tablet . Hope this helps if not let us know what(you device) you have and we'll try something else