No Internet connection after CPU upgrade

Do you have another computer to test if the Ethernet is actually providing internet? If it is the computer's problem, try using the motherboard's driver CD to reinstall the Ethernet controller.
 

I have no clue. My only thought is that the CPU could've changed some stuff with the motherboard bios and it just needs a simple driver reinstall.

 
Ah! The "fiddle factor." That's when you you don't know exactly how things are connected, try stuff until it's fixed, then move on like you know what you were doing all along.

That's been my approach for years. Thank you for the help. Please keep helping because I'm running out of things to fiddle with and I don't want to try swapping back the old CPU.

Now I have to figure out where the drivers are on the mobo cd.