It seems to be something else since you tried with Intel® and Microsoft* drivers. You may try updating the router’s firmware and also resetting the TCP/IP stack:
Open cmd as admin and run the commands below, then restart the system.
- Netsh int ip reset
- Netsh winsock reset
How to reset Internet Protocol (TCP/IP)
http://support.microsoft.com/kb/299357/en
How to repair TCP/IP and Winsock
http://www.speedguide.net/articles/how-to-repair-tcpip-and-winsock-1539