Just built a new computer and everything is working fine. It's running windows 8.1. I got a TP Link TL-WDN4800 wireless adapter since my computer is two floors away from the router. My computer says that is is connected with excellent signal strength but the internet itself does not work when i try to use it. If it does work it's extremely brief (it will load like one page then no more) Any ideas? Should i buy a new wireless adapter?