I use Windows XP SP2 on a Gateway PC. It is connected to a Belkin 54g router. Everythin worked fine until yestarday. I use a static ip address on the router to connect the PC to. yestarday the connection light on the router that displays when a cable is connected into a certain port began a slow flash and I lost all connection to the internet and to the router. The adapter should be working because when you unplug the cable, a MESSAGE appears at the bottom that displays a network cable has been unplugged. Then I was told that the (TCP/IP) was corrupted and needed to be reset, so I reset it. Same problem. Could the network just quit working permenetly or maybe a driver needing to be replaced. Also the PC dosent work directly connected to the modem or with a diffrent network cable that obviously works the PS3 or I wouldn't be ABLE to post this. All help appriciatedIf the modem works with other devices but not this particular pc, it could be a bad ethernet card.how could I find out short of replacing it, cause im affraid you may be right, but I don't want to spend the money on a replacement and the agony of replacing it unless I know it is neccessary.Replacing the card is a 10 minute job at most. Just purchase it from a retailer who will TAKE it back if you don't need it (most retailers accept hw returns). It is not an expensive item.Ok you got me there but isnt there a way to check and diagnose the driver of the card.Sure. You can try the card in a different computer.ok, just put in a new 3com ethernet card which automatically configured and the light is now steady on the router, yet still no connection.Try resetting the router (disconnect it from power for 20 seconds then reconnect) and reboot the computer in needed. Also, what happens if you connect directly to the modem?done that for over a minute on modem router and pc, still nothing, and device manager says drivers are fineSo there is no network connection if yo connect directly to the modem and there are no errors in device manager, is that correct? Have you checked Network Settings in Control Panel to see if the connection shows there?correct and gives the same ip address when modem or router is setup automatically with the message limited or no connectivity, and a solid connection whe manually entering my dmz address, with the exception of no internet or even the ability to access the routers ip addressfigured it out, somehow my mac address went dynamic or something and just decided to change and I have no idea how, but I told my router to recognize the new and Im back in business, THANKS this site is amazingGlad you got it sorted out.