Win XP says it is connected to the LAN, but will not go Online

I have four computers on a LAN but suddenly one will not go online.

I have turned every thing off, Modem, router, all four computers, for more
than ten minets. Then turn on the modem wait for all the lights to turn
green, then power on the router and wait for the green lights, then plug in
each cable one at a time and wait for the light to come on then the next
cable until all four are installed with lights on. Then turn on each
computer, making sure that it can go online before turning on the next one
and so on till all four are on.

I have tried changing to another port on the router with the computer that
won't go online. No Joy
Changed the NIC card to another PCI slot. Changed the NIC card for a known
working one. No Joy
Then swapped cables, still NO JOY!
What the Heck is it !?!
Also every time I did somthing, Windows still tells me it is connected.

Last night I saved what files I wanted, and wiped the hard drive clean, then
installed windows XP home edition, and It Still Does the Same Thing!!!

.

Relevant Pages

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