Computer Shutdowns when playing games not overheating

[Gorhell]

Hi everyone 

I'm experiencing computer shutdowns when playing games and my PC is not overheating. I've attached my log files using HWINFO. 
I've done reseating ram, resetting cmos, updated bios also and checking loose cables. it only happened on games. I've also added AVR and fix our circuit breaker just incase this is fluctuation. What I have notice though is it shutdowns because of 100 CPU usage on all cores especially on watch dogs 2. Almost all high CPU usage cause the shutdowns I think and I also have this buzzing sound issue when playing audio or video. Similar to this  PC buzzing/ Lag while playing Audio/video. I don't think this is my PSU problem

 

Here is my Specs everything is on stock and default settings.
 

CPU	Motherboard	Graphics	RAM
Intel Core i5 6600K	ASUS MAXIMUS VIII RANGER	Zotac GTX 1070 AMP! Extreme Edition	G. Skill Ripjaws
Hard Drive	Hard Drive	Hard Drive	Hard Drive
Samsung EVO 250GB	Seagate 1TB	WD Green 1TB	Seagate 320GB
Hard Drive	Cooling	OS	Monitor
Seagate160GB	CoolerMaster Hyper 212X	Windows 10 Pro	Dell u2713h
Keyboard	Power	Case	Mouse
Ducky ZERO DK2108S	Seasonic M12II-850 EVO	Zalman GS1000	Steelseries Diablo 3 mouse
Mouse Pad	Audio
Razer Goliathus	Edifier 2.1

 

 

I just upgrade this last month I'm coming from i7 920 and it feels like this i5 6600k is too weak for me as it can't even handle my chrome usage Chrome Tabs

 

LOGSHUTDOWN.CSV

LOGSHUTDOWN V2.CSV

LOGSHUTDOWN V3.CSV

[orangecat]

Seems like a faulty PSU. I would recommend you check the PSU voltages in AIDA64.

[Gorhell]

I've posted my HWINFO reading isn't that the same? the 12V 5V and 3V are all stable and not going below their volts

[Gorhell]

Bump Any help?