Windows creates an Administrator user for when you have problems. This means that you can change the password to your account by booting into Safe Mode. To do this, restart the laptop and then continuously press F8 until the Service menu appears. Select Safe Mode and proceed. You will be presented with the logon screen. Select the other Administrator user then go to Start > Control panel > User Accounts and Family Safety > User accounts , select the username you want to change and change its name or password. Reboot the computer and log-in with your new password.