I managed to sort out my problem, the problem with me was zonealarm firewall, so for anyone else having the same problems, try uninstalling your firewall firts.

both the adapter are selected and radio is on, but nothing still. if i try to select the option "manage wireless connections" in network and sharing center, windows gives me an unexpected error and...

i have exactly the same problem only i have a TL-WN821N and im on win 7 64 bit, ive treied re-installing drivers but no luck