I have 2 computers at home on a cable modem and connected with a netgear wireless router. Everything was working fine for months, then I got an error message saying "limited or no connectivity" on the main computer. If I bypass the router I'm connected again. I replaced the cat 5 cable, but still no connect, so I assume it's a bad nic card. when i go into device manager it says the "device is working properly". Can I believe that, or could the card still be bad? Any way to test the card, or is there another problem I may be having? Thanks in advance....

"If I bypass the router I'm connected again" What do you mean by this? You say the router is a wireless one. Are you having the "Limited or no connectivity" issue on the wireless connection or does this router have inbuilt 10/100 ethernet ports as well? What model router is it? Have you done a power reset of the router? I have a netgear FWG114P router that has a habit of dropping LAN connectivity and power rebooting is the only way of restoring it. Does your PC have both standard ethernet NIC and a wireless NIC? I used to have a signature but it disappeared and I just couldn't be bothered writing another so please feel free to ingore this.

Hi Richard, I think I answered my own question somewhat..If I patch from the cable modem directly into the computer nic card, it works fine, so (duh) the card in the computer must be okay. If I patch from the modem to the router, then into the computer, (like I had it originally and it worked fine), then I get "no connectivity". The router is a netgear WGR614v2. I have totally taken the router out of the loop, unplugged it, and tried it again, so I guess I have power rebooted it. The PC has only the standard nic, and the other computer has the wireless receiver plugged into the pc nic. So it looks like the router itself may be bad??

Only other thing I might suggest is to see if the router has a reset button. Mine does. It is a pinhole button activated by use of a straightened paperclip. Good luck with it but it sure sounds like a failure. I used to have a signature but it disappeared and I just couldn't be bothered writing another so please feel free to ingore this.