Hi Thijme,
Also, please see the following website:
http://kb.netgear.com/app/answers/detail/a_id/11127/kw/WNDA3100%20windows%207%2064-bit/r_id/100109
I would also suggest you contact Netgear support directly regarding your device:
http://kbserver.netgear.com/kb_web_files/customer_service/main.htm
Thanks and good luck!
Debra
Microsoft Answers Support Engineer
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