computer won't connect to internet on 5ghz w/new router

[razorseal]

I'm just such at a loss, I don't even know how to explain it..

I just installed an Asus RT-N66R router in my home and for some reason, my desktop is refusing to connect to the internet with it.

I have all my other devices connecting to it via 5ghz and it's perfect with good up speed (60 mbps+)

however, when I connect to the 5ghz band with the desktop, it's dead.

I do have LAN do it because I connect to other devices in my LAN. I can even access the router and ping places and do a traceroute.

as soon as I connect to 2.4ghz on the desktop, there is internet... (very slow @ about 3 mbps) I connect back to 5ghz and it's down again!

I'm trying to connect with a netgear WNDA3100 usb stick. It's been working fine with my netgear WNDR3700 until I swapped routers out today...

any help is greatly appreciated.... I just don't understand how it's possible.

The computer shouldn't care if it connects via 5ghz or 2.4ghz... and it's not the router if I can connect to 5ghz from other computer

 

[thiggins]

It could be an incompatibility on 5 GHz between the router and NETGEAR adapter.

But first try deleting the wireless profile for 5 GHz and re-establishing the connection.

Also check the TCP/IP settings when connected with 5 GHz and make sure they are correct.