D-link wireless usb adapter,no internet?

i just recently bought a D-link wireless USB adapter(WUA-1340) I followed the instructions carefully.I installed the drive correctly. And I've tried reinstalling several times.It can't even find any internet connections,and the router in my house is in the room next to mine. And also,I have recently... show more i just recently bought a D-link wireless USB adapter(WUA-1340)
I followed the instructions carefully.I installed the drive correctly.
And I've tried reinstalling several times.It can't even find any internet connections,and the router in my house is in the room next to mine.
And also,I have recently reformatted my computer a couple days ago.I was having quite a bit of problems because of that too.Maybe it could be the cause too,or maybe not.
(im using a desktop)

please tell me anything helpful I could do to fix this.thanks..
3 answers 3