Wireless Internet Issues - I have an Excellent Connection but it won't connect
I have a wireless cable modem set-up at home and I have never, to do, had any issues with the internet. Recently our power went out and now one of my two computers is not connecting to it anymore. My MacBook still works fine on our network. Both computers see the wireless connection and it registers "Excellent." I did the whole, unplug and turn-off, then turn back on thing. I also tried to plug in the cable directly into the problematic computer and that didn't work.
The computer I'm having issues with is an HP Pavillion dv5 and we're running Windows 7. The network was set-up with a WPA2-Personal security type with AES encryption and I setup a network security key (which I set up about a year ago). The computer still finds the network and it shows the network name, but won't connect. My wife is really frustrated that I haven't figured out how to fix it yet. Any suggestions?