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Nic or cable not functiong....can't get onto my lan or internet

I have 4 pc's running on a lan that's sharing an Earthlink DSL connection. One pc doesn't seem to work. It works briefly sometimes when I change or move the cable. The pc is a Dell Dimension 4600. I opened the box to reseat the nic, but it's fused into the motherboard. I tried to release/renew the ip, but it timed out.....couldn't contact dhcp.  If any additional info needed please ask. I don't know what else to provide.
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bklynbully
Asked:
bklynbully
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1 Solution
 
TXKNetCommented:
bklynbully,
 I had a problem like this wheen i added a router and another PC to my DSL connection. the problem was my ISP uses a MAC address gave them to identify me on thier network. The PC i alredy had on the DSL worked fine but the added machine would not work becouse it's mac address was difrent.
If this is the case with your ISP you will need to clone the MAC address in the router with the one they have, or contact your ISP with the MAC address of the router.
Good Luck,
  Scott
 TXKNet
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bklynbullyAuthor Commented:
I moved the machine down the hall and used a network drop from one of the 3 machines that worked and the machine worked fine. This means something is wrong with the network jack at the original location.

Here's a shot in the dark.....tel me what you think. The hatch at the original location that doesn't work runs through the interior of the wall to a patch panel 50 ft away. Inside the wall very close (2-3 inches) from the cat5 cable are 2 power lines(inside the coils). Maybe it was working all this time, then someone next door, finally used the outlet and the inteference is disrupting my internet connectivity........what'dya think....hit or miss?
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TXKNetCommented:
Sounds kinda far fetched but hey, anything is possible. i would haft to belive it would be something with the wiring. how good are you with drywall and a sawz-all? sounds like fun to me.. hah
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bklynbullyAuthor Commented:
I'll re-install the jack. However I have another question. If one of the twisted pair isn't completely punched down, can this cause the probl;ems I'm having. I would then need a cable tester to make sure all the pairs have connectivity........correct?
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tapkepCommented:
for cat5 only 2 pairs are used, so it depends. If you can, it would be better to reinstall jack.
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bklynbullyAuthor Commented:
I repunched the jack today and it works fine. i appreciate your effort and input.
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