|Try starting in Safe Mode (tap the F8 key a few times at boot to get into the safe mode menu). You should get to the login screen with your username(s) and 'administrator'. Select administrator, if you've never set a password for that then your should be able to log on without one. Once on the desktop go to Control Panel/users, select your main account and select the option to remove the password. Restart in normal mode & you will be able to log on as normal, without a password.|
"I've always been mad, I know I've been mad, like the most of us..."