Change the password Windows 7 has stored for a wireless network

I have a new laptop which I used to connect to the guest network in our house. I typed in the wrong password at login and now I cannot type in the correct one. How can I clear or change the password without having access to the router?

Solution 1:

To modify a wireless network's profile...

1. Open the Control Panel and click Network and Internet.

   

2. Click Network and Sharing Center.

   

3. Click Manage wireless networks on the left pane.

   

4. Right-click on the wireless network and click Properties.

   

5. Click on the Security tab and edit the key in the Network security key field.

   

Note: If you don't want to retype the whole password, you can enable the Show characters option and edit from there.

Solution 2:

Go to your system tray icon

click on wireless network icon, right click the desired network, click on properties

Click on show Characters and change the Network Security Key above it.