How To Remove Stored username and Passwords

To remove the Stored User Names and Passwords from your system, try this: Click Start, Run and type Control keymgr.dll

Remove the entries from the list.

The other ways to access this dialog are:

Type Control Userpasswords2 in RUN box, click Advanced, Manage Passwords

-or-

From Control Panel, select your User Account, click Manage your network passwords

You are done.