I have Belkin g wireless router f5d7234-4 v4. It was working very fine for long time but yesterday when i restart router it stop working. I reset the router, no effect. Then I uploaded configure file one laptop recognized and connect to the router but one laptop and two mobile can't recognized. Then we re installed the driver not effect. One lenovo show only three bars in signal near router. We can't move laptop more than 10 foot from router. In other words strength of the router is low.
Try changing the wireless channel that the router uses.
To do that you need to open your router's configuration manager in a web browser.
Belkin g wireless router f5d7234 4 setup guide should explain how to do that.
Your do not need drivers just the IP address of the router to get into it. HTTP://192.168.2.1 or just 192.168.2.1 Password by default is blank leave blank do not type in blank.