Macbook shutting down when closed and plugged In

[celestialbrat]

Macbook 13inch mid 2012
Running on Yosemite 10.10.05


Despite what I do to my power settings my macbook will shut completely down when plugged in after about an hour. But will stay in sleep mode for days/ until it runs out of power when not plugged in. Seem like something is backwards here????? Probably unrelated but when I boot it backup the screen will be frozen long enough for the screen to go black and stay black (total of about 4 mins) then it will come to (with some button fidgeting) and let me enter my password. Is there anyway to edit the power settings more then whats in the system preferences? this has all been happening for a couple of updates so it not that.

 

[chscag]

You have a MacBook Pro not a MacBook. What's the condition of the battery?

 

[celestialbrat]

You have a MacBook Pro not a MacBook. What's the condition of the battery?

Yes Pro sorry. How do I check my battery condition?

 

[chscag]

There are several good battery monitor and health apps that you can download from the Mac App Store. Here's one that is popular.

 

[Dave Braine]

Have a look here:
http://computers.tutsplus.com/tutorials/how-to-hibernate-a-mac--cms-23235

 

[JohnDS]

You need to check your console logs for messages immediately before the computer shut down.

 

[grahamperrin]

Consider the possibility of an automated stop in response to overheating, or in response to a heat sensor problem. An Apple Authorised Service Provider should be able to diagnose the hardware properly, with an Apple utility that's not available to the public.

check your console logs for messages immediately before the computer shut down.

With luck, there may also be something of interest amongst the messages that followed the start.

http://apple.stackexchange.com/a/219505/8546