won't log on

Make sure your are using your correct user name and password. Windows does not just not let you on for no reason. I've had people swear they are typing in everything right, I have them give me their info, I type it in, it works. Check caps and num lock to make sure you are using capitals and the right numbers if you need to. If the system is on a domain, check with the system admin if there are any issues with your account.