Hello, I bought a Linksys router E1000. I connected my PC (Windows 7)with wire. I also connectedmy father laptop (Windows 7) with integrated WiFi modem in it. Everything worked fine. Then I tried to connect my sisters laptop (Win XP) , it did not have integrated WiFi adapter, so I bought the D-Link DWA-131 Wireless N USB Adapter Nano. I installed it drivers, it saw my router, but it couldn't connect. It connected couple of times, but only for a few seconds. What I should do?