PC Shuts Down While Playing Games in Fullscreen

Dec 20, 2018
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Hello everyone!

I really need your advice here.
I just had an upgrade on my old pc. Here are the specs:

Motherboard: Asrock Z77 Extreme11
Processor: Intel Core i7 3770k
VGA: Gigabyte Nvidia GTX 1070
HDD:
- WD Green 4TB
SSD: Plextor 250Gb
RAM: 4x HyperX Savage 16Gb 2400MHz DDR 3 DIMM
Water Cooling: Custom - EKWB P360 + 240mm Radiator
Power Supply: Seasonic Prime 1500W 80+ Titanium
Soundcard: ASUS ROG Xonar Phoebus 7.1

(No Overclocking)

So the problem is, everytime I play games(such as CS:GO, GTA V, NBA 2K19, FIFA 19) in fullscreen and fulscreen windowed(or bordered fullscreen) mode, the pc shuts down right just when I am about to play(not the game menu), then on again. I tried it already from the highest to lowest graphic quality. It went just the same. BUT not if I play in windowed mode. It runs well, even with the highest graphic quality. I've read so many threads and mainly they said it is caused by the temperature failure of cpu/gpu, or the psu failure. I checked both of temperature, it was just fine below 80. And I don't believe if it is the psu failure, because my psu is quiet expensive and known to be one of the best psu(Seasonic Prime 1500W 80+ Titanium). Or is it?
Please help me resolve this issue.
I kindly appreciate your ideas!

Cheers!
 
Dec 27, 2018
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Strange symptoms for sure. My son had a similar problem but we never tested windowed so it might not be the same cause as yours. Usually overtemps cause throttling which leads to frame rate loss in my experience. Your situation seems to be power related . He had an Ultra brand 1000watt supply. We changed it and it fixed the problem. I dont know how old your system is but it's certainly a possibility that your power supply may be faulty as well. I'd check all my connectors first. MB 24 pin and 8 pin especially. It can be easy to think they are completely inserted. If all that checks out maybe you could borrow a supply to test with. A 600 watt seems large enough for what you're running. Good luck to you sir. I hope this helps
 

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