To delete a user profile
You must be logged on as an administrator or a member of the Administrators group in order to complete this procedure. If your computer is connected to a network, network policy settings may also prevent you from completing this procedure.
Open System in Control Panel.
On the Advanced tab, under User Profiles, click Settings.
Under Profiles stored on this computer, click the user profile you want to delete, and then click Delete.
To open System, click Start, click Control Panel, click Performance and Maintenance, and then click System.