Toshiba satellite randomly started turning off by itself

Hello my name is alex,
My toshiba laptop has been acting very strange the past week.
1) it just randomly started turning off by itself.
2) im always having to reset the time and date settings back to the correct time.i have to do it everytime i get on my laptop ( just recently) the time zone is correct, i have it running with the i ternet.... everything im suppose to be doing i am.
3 now whenever i go to turn my laptop on, nothing happens.... BUT this is the weird thing
... the only way im able to turn my competer on is.. put the computer in my lap, center the laptop on my knee and push and hold the power button and push down on both sides of my computer! Not easy either, the computer bends makes crackin sounds... something is not right at all! I have tried factory reset, tested the battery, took the back off the computer and checked out the motherboard.. i have ran out of options and do not know the next step to do, i have seriously researchrd, read, tried with the best of my ability and knowledge..with all that said, is there anyway you could please give me advice, other ways to try and fix it?
Thanks alot
Alex