Connection problems with N600 WNDA3100

[MTO]

Hello NETGEAR and every other user on this forum!

I bought and received a N600 Wireless Dual Band Adapter (WNDA3100), but I am having connection problems using it. I can easily find my router and "connect" to it, but my windows 7 insists that the network is unidentified and that there is no internet access. I have read through the user manual and I can not find the answer to my problem, so I am asking if anyone here knows what the problem could be?

Regards,
MTO