ASRock Z370 Extreme4 shuts itself down

Storage: Samsung SSD 970 500GB M.2 (OS is installed on this). Seagate Barracuda 2TB 3.5'' HDD and a Crucial M500 SSD 2.5" 240GB.

I've had issues now for a week regarding my USB slots, my mobos usb ports has just stopped working randomly then started working again. But now just some hours ago my pc just shutted itself down. Not doing anything special, i powered it back on and it worked a bit then shutted itself down again, i powered it back up again and before i even hit the bios screen it died. And this kept happening for hours.

I now managed to fix this like 40 minutes ago by removing the cpu and putting it back in again but i builded this pc on august 1 and it ran flawless a full week and then now a full week nearly with just issues from time to time, but the pc just shuts itself down recently. Any idea what it can be? I'm rushing this post since it can shut down any moment now so i'll link my post i made yesterday at tomshardware regarding my usb issues.

http://www.tomshardware.co.uk/answers/id-3761883/issue-asrock-z370-extreme4-usb-ports-working.html

If anyone got any idea what it can be then let me know.

This might help i donno.

https://1drv.ms/t/s!Av0v4dUc625OkFcvfIlqHDC6v6Df