Computer randomly shuts down after installing new motherboard and CPU

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rlsmitty

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Jul 5, 2015
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I recently began a custom build and went online and bought a Gigabyte 990fxa-ud3 Rev.4.1 motherboard and a AMD FX-8350 8 core CPU. Ever since it was installed, my computer will run, but after awhile it will randomly just shut off in the middle of using it. I know my PSU is fine because I tested it with a PSU tester at the Computer Tech shop I work at. I'm not sure if it has to do with some BIOS settings or what. I read online to go to OS TYPE in my BIOS and set it to Windows 8 and to set SFM MODE to NEVER. Which seems to allow it to run longer but it still shuts off. I want to say it usually shuts off when I am running a lot of programs or start up a graphically intense program such as Steam games. If I cant fix this them I;m going to wipe off Windows 8 and do a full Windows 7 reinstall instead. I also livestream on Twitch so I need my PC running flawless asap. If anyone could help me out it would be appreciated! Thanks!


Motherboard: Gigabyte 990FXA-UD3 Rev.4.1
CPU: AMD FX-8350
Cooling: Corsair H90 Liquid CPU cooling and 2X80mm Fans
Case: Lascala Series LC13-E
PSU: GameMax 700W ATX 12V Multi Protection Gaming Gamer Desktop PC Computer Power Supply 80 PLUS BRONZE CERTIFIED
GPU: HAWK Raedon R9-270x
RAM: 8gb DDR3 1600mhz
OS: Windows 8.1
1TB Hard Drive
 
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skitszo

Honorable
Jul 6, 2015
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Well you work in a computer store so i'm guessing you've done some of the basics.

1) I googled the mother board and customers over at newegg says the northbridge gets hot and over heats.

2) I googled your power supply and more then one amazon customers says that it switches off on its own.



so i would recommend a different power supply. and get as much air flow as you can get into that case. Make sure you get the power supply air flow thru the side of the case and not into the case.

Other then that you need to know if your CPU is over heating. Your memory is memtested. Drivers are working. blaa blaa etc etc....

(its probly the PSU)
 
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rlsmitty

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Jul 5, 2015
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I've also read that the North Bridge gets hot. I've never had issues with my power supply. however I did test it and its perfectly fine. I'm running memtests on my memory right now to see what happens. And what did you mean by making sure the airflow for the power supply is flowing out the side of the case rather than into the case?
 
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rlsmitty

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Jul 5, 2015
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So I ran Memtest on my RAM and it was fine. My North Bridge is INCREDIBLY hot. So I went ahead and tweaked my Fans setup. So on my case I now have 3 88mm fans. 2 blow air IN and (From the bottom and the back) and 1 blows air OUT (from the top) and my Liquid Cooling fan blows air in from the front of my case. The 3 88mm fans all have a switch (low, medium, high) so the 2 blowing air IN are set to high and the fan blowing air OUT is set to low. So that way my air comes in fast, has time to cool things down, and then slowly force air out o f my case. How does that sound to you guys?
 
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rlsmitty

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Jul 5, 2015
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Figured it out guys. My mobo's CPU Power setting was set to AUTO (1.3375V) when my CPU requires 1.75v so I pushed it up and its fine. Thanks for trying help guys! I tried all of your suggestions!
 
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laxiba

Nov 2, 2019
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0
10
rlsmitty said:
Figured it out guys. My mobo's CPU Power setting was set to AUTO (1.3375V) when my CPU requires 1.75v so I pushed it up and its fine. Thanks for trying help guys! I tried all of your suggestions!
Click to expand...
How did you do that ? Maybe i'm having the same problem because i just changed my motherboard and now i can't play "heavy" games, if i try my Pc shutdown and restart. Please, help me. :/

My Pc Specs are:
Motherboard: GIGABYTE H81M-S1
Processor: Core i5-4460
GPU: GeForce 1070GTX
Memory: 8Gb (2x4Gb)
Power Supply: 600W Corsair
HD: SATA 1Tb
SSD: 120Gb (For the W10 OS only)

 
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