I have seen this so many times where people forget their login password and start to panic. There’s no need to panic with this freeware application called “Ophcrack”.
Ophcrack is a Windows password cracker based on a time-memory trade-off using rainbow tables. This is a new variant of Hellman’s original trade-off, with better performance. It recovers 99.9% of alphanumeric passwords in seconds.
It’s recommended that you download the LiveCD and burn the ISO to a disc. All you need to do is boot your computer from the LiveCD and run Ophcrack. I tried the XP version and had no problems retrieving my 7 character password which had special characters and numbers. It took only 10 seconds to crack the password and I was thrilled.
Once you have retrieved your password and you’re able to login again, put your LiveCD that you burned in a safe place. Hey, maybe you can be a hero for a friend one day.