power failure might have damage your NIC, anyway, try to check if uinstall and reinstall your NIC with latest driver would help remedy the problem, and also check in the properties of your adapter, "allow this device to bring the computer out of standby" is tick and "allow the computer to turn off this device to save power" is untick.
hope it helps.
Thanks but the Power Management Options in the adapter properties for Driver dated 4/7/2010 v. 10.1.9.0 only have the following choices:
Power Save Options
1) Reduce power if cable disconnected (not checked)
2) Reduce Link speed during system idle (not checked)
Wake on LAN:
1) Wake on Directed Packet (checked)
2) Wake on Magic Packet (checked)
3) Wake on Magic Packet from power off state (checked)
4) Wake on Link (checked)
The older drivers had the "allow the computer to turn off ...." which also didn't seem to affect my problem.
I have the identical problem, same board, same NIC. I found a temporary solution. Unclick all the wake options, and mine woke up; until I rebooted the computer, then it would not 'wake up' post bootup, until I checked YES to "wake on magic packet", OK, and then unchecked the same "wake on magic packet", OK, and finally the NIC would wake up. However this is a silly solution for a new Intel board.
Did you find a good solution to the no wake problem with the NIC? I am also considering buying an independent NIC card.
I think I tried every combination of wake/don't wake available but with no success. I finally bought a Realtek NIC and squeezed it in between the video cards and have not had any problems since. The Realtek card wakes up immediately from sleep and, for $25 was very worthwhile. So much so, I'm thinking of getting cards for both of my other computers with Intel motherboards. I'm glad your solution works for you though.