This issue goes away when I reset the adapter. The whole network can't be accessed even the routers hompage when I use a VPN like Private Internet Access or CyberGhost VPN.
It happens particularly with TP-LINK N750 router. I tried it with Dlink but it works well. I contacted tplink and they said its a driver problem. It seems this adapter has some weird bug with Atheros routers.
Have you updated the firmware version of the TP-Link router? You may check on their web site for updated versions
What is the version of the driver that yo are using for the Intel(R) N1030? And what is the operating system being used?
One thing I see is that the problem might be a compatibility problem if its working properly with the Dlink router.