Macbook pro shut down and won't turn back on.

[rbredt]

Right.
So we were making videos on my friends Mac and she closed it and then unplugged it when we had to go over to her place.
We get to her place and she can't seem to turn the laptop on.
I've looked at it and it will start to boot up, but only if you hold down the power button and even then it will stop booting up after a few seconds
The battery is charged and the Mac is plugged in.
Any ideas on how I can get the thing working again?

 

[arogge]

This is the third Mac I've seen this week that has had a problem like this, including mine. Could the switch circuit be damaged?