I have my power button rigged up and working woooh

. I noticed my problem the first time I took the laptop out to my car to test it. I closed the lid and tried to power on the laptop... nothing.
I took the laptop back to my work area, opened up the lid and tried my power button again. VIOLA, it works. I couldn't figure out what was going on so I tried the first thing that I thought would cause the problem, that little hinge that hold the lid closed. After "removing" that I tried it again, still nothing.
I looked the whole laptop over and I can't find anything that I can see that would keep the laptop from powering on when the lid is closed. Hopfully someone has had the same experience and can lend me a hand.