My ethernet has suddenly stopped working

September 28, 2010 at 05:14:39
Specs: Windows XP
But it is just on the one PC and must be a PC problem. Ethernet points in the rest of the house are all fine, so it's not the router. I have changed the DSL cable into the back of the PC and the lights all go on, but still no internet access.
When I run the ipconfig command, it shows an IP address and a subnet mask series of figures, but there is nothing next to default gateway.

I am currently using a wireless adapter on the one USB port that still works (the others haven't worked for ages, could the two issues be connected?) and this shows sets of figures for all three in ipconfig.

However, it's a big house, the wireless router is three floors down and I am currently piggybacking of next door's unsecured network. Not ideal!

Any ideas?

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September 28, 2010 at 06:45:04
USB ports failing, NIC failing. Why don't you investigate motherboard replacement.

You haven't provided any details of the ipconfig output so I am guessing but I suspect when you try to connect ethernet the ip you get starts with 169 but when you connect wirelessly or other systems in the home that successfully connect get IP in the 192.168.x.x range. That would be a clear indication that the ethernet connection fails to connect with the router.
Have you looked in devicemanager to see if the NIC is working?

If motherboard replacement isn't an option at present you can always look to install a PCI NIC. Typically you can pick up these for a few dollars and it may resolve your issue at least temporarily until something else on the system fails.

Never yet found a motherboard that will self-repair.

Goin' Fishin' (Some day)

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September 28, 2010 at 07:28:20
Thanks, to be honest, being an idiot I didn't even consider the motherboard.

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