Remove stored passwords
If you have passwords stored on your computer that you no longer need, follow these steps to delete them:
Open User Accounts by clicking the Start button , clicking Control Panel, clicking User Accounts and Family Safety (or clicking User Accounts, if you are connected to a network domain), and then clicking User Accounts.
In the left pane, click Manage your network passwords.
Click the password that you want to remove, and then click Remove.