I'm sorry about the issue. Is there any error or message when logging on your computer?
Was the password *****?
Was there any change recently to your computer that may have caused this issue?
What's the model of your computer?
Can you please confirm it has windows vista (or windows xp, or windows 7 or 8 or 10)?
Are the CAPS lock key and NUM lock key on or off on the keyboard?
Please reply at the box below. Thank you.