Wireless WRT54G I have a wireless card in my lap top that recently is unable to get or hold a signal. Somtimes it will indicate that the signal is strong but will not be able to log on. If I try to check for availible networks I get a message that there are no wirerless networks in range. The laptop is within 20 feet of the router. This system was working two days ago. I also have another computer that is configured to the router and I am getting the same problem

Try upgrading the routers firmware. The instructions are available on the manufacturers website and I believe you can do it through the web interface built into the router. It sounds like the radio section of the router may have failed.

Considering there are problems on the two computers it shouldn't be the wireless system. It may be the router or what's feeding the router. Cabling is always suspect. Whatever is feeding the router may need to be reset by a power of and on cycle. So I would unplug the router and equipment feeding the router and turn off the computers and wait 30 seconds and start with the device feeding the router, the router and then the computer directly wired to the router. If there is a problem still call your internet service provider.