1. Use your system "find" feature to locate all .pwl files

2. Delete them.

The system will then ask you to create a new password.

To find a network key:

1. DOS Prompt - C:\Users\folder>netsh wlan show profiles

2. {locate desired_profile}

3. netsh wlan show profiles "desired_profile" key = clear

Under Security Settings -- Key Content:  Th3_p@$$w0rd