This device cannot start (Ethernet driver)  

There is a windows trouble shooting wizard for devices here you might try :
Type this is in search - "Find and fix problems with devices" and run the wizard - I would suggest check the fix automatically box.

It didn't fix my problem, but it did tell me it is a driver issue, not a hardware issue. I wonder if there's some sort of issue with Win7 and there's an update that fixes it. Of course, I can't get it because I can't connect to the Internet -_-