Motorola WR850G wireless router loses wired connection.

Wow sounds like a nightmare! I work on networks for a living so I can try to help you. If my solutions do not work please e-mail me at ebay_2010@hotmail.com to follow up on this problem.

There could be many issues with this and it would be helpful if I knew your settings more in detail, like if your using DHCP, your subnet mask, etc. but here we go in order:

1. When you plug the computer into the router does the link light on both the PC and router glow? If not there is something physically wrong (or drivers not working), plain and simple. If it does glow, move down to number 2. Since you changed out so many things (router and the cables) that leaves the network card inside your computer. I am not saying it is broken I am saying it might be installed wrong. Check in Device manager (CONTROL PANEL, SYSTEM, HARDWARE, DEVICE MANAGER for XP) to see if your network card is disables (red circle) or has an issue (yellow circle). If it is disable right-click on it and click on ENABLE if it has an issue then remove the drivers then go to their web site and download the most current drivers. If that does not get a link light then its the port on the router (try another one) or the cable. Since you changed both of them make sure you are using a straight-through cable and not a cross-over cable (see picture for information). As you can see the straight-through cable is the same color on both ends (Pin 2 is green on both ends while on a cross over pin 2 is green on one end and on the other pin 2 is orange) you should be using a straight-through cable. If all of that still does not work then I am sorry to say your network card is not functioning like it should (or the wrong drivers are installed). To test to see if TCP/IP and your network card are being bound correctly do this: click on START then on RUN then inside the run dialog type "CMD" (for windows NT4.0, 2000, XP) or "COMMAND" (for windows ME, 98, or 95) then click on the OK button. This will bring up the command line, now type "PING 127.0.0.1" without the quotes and then hit enter. This should send four packets to your computer from your computer (a self-check) if it says 4 packets sent and 4 recieved your card is working if it says 4 packets sent and 0 recieved (or anything less then 4) there is something wrong with your card. Also check your CMOS (BIOS) to see if your NIC card is enabled (not likely the issue but worth a shot). Replace it or try different drivers from the website of the people who made it.

2. Your wireless setting on the router are to working but the wired settings seem not to work, try to ping the routers IP address (the default gateway). To ping your device click on START then on RUN then inside the run dialog type "CMD" (for windows NT4.0, 2000, XP) or "COMMAND" (for windows ME, 98, or 95) then click on the OK button. This will bring up the command line, now type "PING ###.###.###.###" where the #'s are your IP address to your router then hit enter. Normally the default is 192.168.1.1 so you would type: PING 192.168.1.1 then hit enter. If you can ping the router (4 packets sent and 4 recieved) then your router is set up wrong if you can't (4 packets sent and 0 recieved) then you either typed the wrong IP address down for your router or your network card (drivers, bad card, disabled, etc) or your cable is the problem or ou have the wrong subnet and your computer can not see the router. If you can't ping the router your computer can not communicate with it and its your computer/network card/cable fault or you have the wrong subnet and your computer can not see the router. If you can ping the router its the routers problem.

3. If its the routers problem... If you have DHCP running (dynamic IP setup) make sure your network card is set to "Automatically obtain IP address" if your not using DHCP then make sure your IP address, subnet, default gateway, and all the DNS servers are entered in correctly. Even if you are using DCHP make sure the setting are correct. This information can be checked by going to a working computer (that is getting internet from the wireless) and clicking on START then on RUN then inside the run dialog type "CMD" (for windows NT4.0, 2000, XP) or "COMMAND" (for windows ME, 98, or 95) then click on the OK button. This will bring up the command line, now type "IPCONFIG /ALL" without the quotes (or "WINIPCFG" for windows 95, 98, or ME) then hit enter, this will bring up all your current IP information. Make sure you do not reuse the same IP ADDRESS for both computer, it needs to be different but the rest of the information needs to be the same (subnet, default gateway, and all the DNS servers). your IP address should have the FIRST three octecs the same (ie. if your wireless laptop is 192.168.1.100 then make your computers 192.168.1.101). If all the information is correct and the issue is still happening continue on....

4. If all the settings are correct and the links lights glow and the computer can ping the rou

Sorry my last post was cut off:

4. If all the settings are correct and the links lights glow and the computer can ping the router there leaves only TWO thing: the wired settings for your router. Make sure they are all correct: DHCP enabled, your security settings are not too high, etc. !!OR!! Your internet setting are wrong on your PC... If your using IE make sure your settings are correct under TOOLS then INTERNET OPTIONS under the tool menu. If you are using Windows XP with SP2 then make sure the firewall settings are not too high.

I hope this helps!!! If not e-mail me.