How to Fix - Cannot get access to wireless router after Windows 7 installation?

Cannot get access to wireless router after Windows 7 installation

My brother recently purchased a new PC and asked me to help him set it up.  It came with Vista, but he waited until he received the Upgrade disks and me to get started.  It took several hours to set up Vista, do updates and then install Windows 7.  All
during the processess we were connected to the Wireless router with no problems.  Once Windows 7 finished installation and we were supposed to do the POST installation processes we were no longer able to log onto the wireless router. 

We get a message that indicates something is not set up correctly.  Error message: "The settings saved on this computer for the network do not match the requirements of the network".
The router is a newer linksys model.  Settings WPA2-personal, and AES.  We had a laptop available and double checked that it could still access the internet through the router and we had no problems.
I don't know where to go with this, please help.

Keys to the Problem Cannot get access to wireless router after Windows 7 installation

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Thank you GordonBP, your suggestion did not work for my brother, however I wasn't there when he tried it so I don't know exactly what he did. 

My Brother did go to the Router and did a reset clearing the settings and is now able to access the internet.  I will have to go there and set up security for him. 

My new question is: are there specific settings to allow Windows 7 to work with the router?

Open Action Center by clicking the Start button Picture of the Start button, clicking Control Panel, and then, under System and Security, clicking Review your computer's status.

Make sure your computer has at least the minimum amount of random access memory (RAM) required to run the program that is displaying the error. Look for the program requirements online or in the packaging information.

Another Safe way to Repair the Problem: Cannot get access to wireless router after Windows 7 installation:

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