Computer Shuts Off Without Warning

z0mbiepwner11 · Nov 16, 2015

My computer powers off without warning. I can be doing anything from a stress test to being idle. Always within 1-20 min. I did Hardware tests and everything is working fine. And i cannot stress enough, its not heat. My CPU never goes above 40 C, my GPU never reaches even that. I checked my power supply fan and that is working. Hell, I even went as far as changing power strips and changing outlets. Still turned off. I am completely flabbergasted by what could be wrong. The only thing I haven't checked is the case. But could that be causing it, its a relatively new case? I am getting the Antec 900 soon and can switch it out with that. Please help.

My Hardware<>

Motherboard: GIGABYTE GA-990FXA-UD3 AM3+ AMD 990FX + SB950 6 x SATA 6Gb/s USB 3.0 ATX AMD Motherboard

My GPU: EVGA 02G-P4-3753-KR G-SYNC Support GeForce GTX 750 Ti Superclocked 2GB 128-Bit GDDR5 PCI Express 3.0 Video Card

My CPU: AMD FX-6300 Vishera 6-Core 3.5GHz (4.1GHz Turbo) Socket AM3+ 95W FD6300WMHKBOX Desktop Processor

My HDD: WD Blue WD10EZEX 1TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive

My RAM: G.SKILL Ripjaws X Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9D-8GBXL

My PSU: Rosewill ARC-M550, ARC Series 550W Modular Power Supply, 80 PLUS Bronze Certified, Single +12V Rail, Intel 4th Gen CPU Ready, SLI & CrossFire Ready

My Cooling: Cooler Master Hyper 212 EVO - CPU Cooler with 120 mm PWM Fan

rar_54 · Nov 16, 2015

I have a Gigabyte 1155 socket MB and started having problems with phantom resets after installing Win 10. Turned out to be Gigabyte Easy Tune 6 - the program is hard to delete, finally had to google it and then also delete the ET6 folder but my problem went away after getting rid of it. Make sure your Gigabyte MoBo oc sw is Win10 compatible if you are on Win10 and go from there.

z0mbiepwner11 · Nov 16, 2015

I thought it was Windows 10 as the problem occurred slightly before installing it. I did a Hard Wipe of the system and installed Windows 7 Ult. Also, I forget to mention that it will not turn off until I unplug the power cord and flip the PSU switch of then on again. Not sure if that is important but whatever. lol

turkey3_scratch · Nov 16, 2015

Is it an instant power cut and black screen or does it do the "Windows is shutting down" gimmick? It is most likely the PSU.

z0mbiepwner11 · Nov 16, 2015

Instant black screen. No warning just black. And it wont turn on unless I unplug the power cord and plug it back in. I looked on another thread with the same problem and he said it was the PSUs surge protection powering the system off to protect if from the surge of the outlet. I am going to test the outlets later.

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Computer Shuts Off Without Warning

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