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I have a computer (desktop) that ran Windows 7 on it, until Friday, when I upgraded to Windows 8.

When my computer was turned off when I had Windows 7, the LAN lights on the Ethernet port were on. With Windows 8, I have lights; it's completely dark when my PC is off. Is this OK?

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Define a lan light in this context? –  Xyon Oct 28 '12 at 23:26
    
Do you mean the LEDs on the network adapter or a router/modem that it is connected to? –  Synetech Oct 28 '12 at 23:54
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Led on the network adapter where the LAN cable plugs into to rear of the computer –  Kyle Oct 29 '12 at 0:19
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3 Answers

Whether the ethernet LED stays on or off depends on your Operating System's and/or BIOS settings regarding Wake on LAN. If you have no interest in using this feature than you have not lost any functionality.

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Run the following command to do a hybrid shutdown (next time you startup your PC, a cold/slow boot would be done):

shutdown -s -t 0

Now, check if the LAN lights are on. If they are not, it is related to the incompatibility of Windows 8's fast startup feature with wake-on-lan. Check this link if you would like to disable it.

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Yes it's a bug in Window 7 and previous versions. Wake-on-LAN is only supposed to work from Hibernate and Sleep. Shutdown is supposed to completely power off everything including the NICs. Look for the artice on MSDN.

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