Jan is trying to fire up an old HP laptop and it's asking for a Windows login password. She doesn't know it. It's Windows 8. Leo says that there are some cracks that can hack a Windows 8 login. But she needs to be careful that she isn't making the problem worse with malware. If she doesn't need the data, the easiest would be to wipe the laptop and reinstall Windows. Then, if she has a backup, she can just restore it.
From the chatroom - Here's a how to on resetting a Windows 8 password using a hidden administrator account. Here's another option for recovering the password. There's also a utility from the Ultimate Boot CD. Try that.