LAN light goes out when computer turns on

June 26, 2011 at 08:16:32
Specs: Windows 7
I think I have a strange failure mode on an ethernet card.

A desktop computer is connected to a new router. The router works correctly with a laptop computer (plugged into a hard line and with wireless turned off). The LAN light on the router behaves as expected.

When the desktop is plugged into the same port on the router, the LAN light does not come on. However, when the desktop is powered down (but still plugged in) - THEN, the LAN light comes on.

Can anyone explain this?

I think it's possible that the ethernet card on the desktop was fried in a recent electrical storm (that's the reason for the new router; the old one was fried in the storm, surge came in over phone lines / cable line. But this failure mode is surprising to me - can anyone clarify why this is happening / whether this ethernet card may be salvagable?


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June 26, 2011 at 08:17:26
Hardware info didn't show up - it's a :

Realtek RTL8168C/8111C Family PCI-E GB Ethernet NIC (NDIS 6.0)

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