I have a D-Link that 2 other laptops are on. It's unsecure, signal strength is 100%, and the WiFi on my Toshiba laptop is on... Yet when I attempt to connect it won't let me. Say's i have to diagnose the problem and bah bah bah. What could be wrong?
What SPECIFICALLY is the error message telling you? Have you installed the proper drivers for the wireless on the Toshiba? Is this built-in, or an add on card? Do you have enough addresses in the DHCP pool on the router? Does the router have MAC address filtering enabled?