Q: Macbook Pro-2011 Tink sound and shuts off.

Sup Guys,

I have 2 issues:

My Macbook Pro randomly makes a tink sound when moved (not all the time, but more times than not).  I narrowed it down to it mostly being warm and in the process of doing something when I put the computer to Sleep of shut down.  I turn it back on and everything is back up like nothing happens.  OKAY! Now, I have noticed when I place my computer on my bed, it might bounce a tad bit and it shuts off. ***! I turn it back on, everything is fine.  Also, when I am holding my computer on 2 diagonal corners (top and bottom, diagonally) and move in circular motion (Why I am doing this, I do not know), and it shuts down.  ***!! I turn it on, its fine. Now mind you, right before it shuts down, I hear that TINK sound.

Second issue might be related to the first.  My charger is goofy. Been trying to stick it out with the one that came with the computer.  Sometimes, When I unplug my charger (from the wall, not the computer) and plug it into another outlet, it won't charge. (I  just bought a new one to test this out)  If my charger is moved (the part that is plugged into my computer), I might hear that TINK sound and it'll shut off.  i unplug my charger and turn it back on.  Lastly, my charger will just stop charging while its plugged.

HELP ME! I don't want to buy another computer lol