How to Stop Windows from Asking for a Password
Passwords are useful to prevent unauthorized access into your account, but can be a hassle for other types of computers, such as public computers. Removing a password from a Windows computer is a very simple task.
Open the "Control Panel" of your computer and select "User Accounts."
Click on "Change an account" in the "User Accounts" window. Select the account that you want to have no password.
Click on "Remove my password." In the next screen, you must type in your old password and then press enter to remove it.