Changing your Windows password

Click Start and in the Start Search (bottom entry box) type cmd.
On top of the menu, rightclick cmd.exe and choose "Run as administrator."

Then write this command:
net user
The command will display a list of usernames which can access the computer.
Then type this command using the username whose password you want to change or bypass:
net user username *
Make sure you put a space between the star and username.
You will be prompted to enter a new password. If you leave it blank the command will erase your current password.
Then hit Enter twice to remove or change your password.