notebook turns off by itself

Hello

Ive got new notebook Acer e15 571g, i recently added 4gb ram into it, and it was pain to do.

I was playing game few minutes ago and my pc just turned off. He was turned on for 30hours by that time. It wasnt so hot, im using cooler pad.

How can i know what caused this? Could it be the new ram or did i damaged something in it while adding that ram? I also overclocked my gpu, but for now i reverted it and gonna play some more to test it.

It was running without problems before adding that ram.

Thanks

When you added the RAM, did you take off the access panel and make sure that it was seated properly? Also have you made sure that the battery is also properly seated?

You did not take off the bottom cover at anytime did you? Also where did you purchase the RAM at?

Yea its seated properly...i dont use battery im on ac charger only

Btw this is how the ram is upgraded in this model, https://www.youtube.com/watch?v=rmsFDi_qsnQ
Im not from america, but i bought it from good seller here.

I run burn in test and everything was working fine without any error. Are there any other software which should i use?