I note one reason in our forum sticky. But first tell us if you set it up as noted in our forum sticky.
Hi, I'm running Vista on my new laptop, and trying to connect to my family's secured wireless network. It won't connect unless I reboot the router while my laptop is up and running. If the connection is interrupted for any reason, including turning off or hibernating the laptop, I can't get back on unless I unplug the router and plug it back in again. Two other computers on the network, 1 XP and 1 Vista, have no trouble establishing connection at all. Has anyone heard of this problem before, and if so, how do I fix it?