|Some things to try if you haven't already:
Posted: 9/7/2012 11:26:52 PM
It says the wireless is an Intel Centrino Wireless 2230, 2x2 bgn, like KktdocT said, look for an updated driver on that first and update.
Is the wired network card a realtek or broadcom (most likely one of the two)? If so, see if you can update that as well. That not working is odd and could be something with your network configuration on the machine. Did your computer buddy clear out the IP address, DNS and ARP caches, and stuff like that?
Also, see what the router signal is set to (g/n/mixed). Sometimes that creates issues with some wireless devices depending on what that is set to.
And lastly, if all else fails, get a different router. I had a realtek network card that wouldn't work with a netgear router back in the day no matter what you did. Like Lipps said, sometimes this garbage just isn't compatible and doesn't want to work together like it should.