NV54 lid sensor?
That's the guide I used to disassemble my NV54, and nowhere does it mention anything about the lid sensor. I followed it in reverse to reassemble.
I've checked them, that was the first thing that came to mind. It's a fresh copy of Windows 7, so those settings are set to put the laptop to sleep by default.
I think there may be something wrong with the sensor, but I have no clue where it's at, or where to go to find out where it's at.