Dear Asus specialists,

I have been looking for a solution to cure my laptop from overheating. I have then finally decided to reapply a new thermal compound Arctic mx4 on my GPU and CPU. After successfully doing that, I have reinstalled every wire and started the computer. After a while, it turned itself off. What can be the issue?

There is a piece that I found while disassembling the motherboard, shown in the Dropbox link below "Pictures". What is it?

I have uploaded a video and description on youtube, that hopefully can help me to solve this problem:
In the video you can see me entering BIOS and monitoring temperatures, when suddenly laptop turns off.

Pictures of the motherboard and the broken piece:

My Serial number is: A8BN0AS485005483 and the laptop is ASUS G71Gx.

Any help will be appreciated,