Surface Pro networking woes

Maybe not the best place to post this but...

Anyone has the Surface Pro, and had to deal with networking issues? I am using the latest firmware, and I tried 2 sets of WiFi drivers. On my 5GHz 802.11n network, it won't even connect, by reporting that the supplied password is wrong. My laptop and Lumia 920 connect to said network just fine. Disabling the WiFi password doesn't help. It connects fine to the 2.4GHz network of the same router, but occasionally (let's say once every 2 hours) it will give "limited connectivity" and will require me to manually re-connect to the network. I have 3-4 other devices that connect to this network without similar issues. I am fairly certain it's not my network setup.

Help?