O.K. Set both laptops next to one another, and turn them on. Find "Control Panel" icon and mouse clik on it on both laptops. After you have the Control Panel screen on both laptops, clik on the "Network Connections" icon (or however it's listed) on both laptops. You should see "Available Networks" heading on each laptop and an icon for your wireless network on each. RIGHT clik on each wireless icon on each laptop. Is any information displayed appear to be different between the two laptops? Be careful here, don't change anything, and make any notes for future reference. Then use the cancel button to close out of these screens and close control panel. Let me know what you saw. I know this is rather tedious but I don't know how to do it any other way. By the way, on the laptop that won't communicate is there a button like a function key on the keyboard or on the back of laptop that turns on wireless function?
Jim