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Random Restarts Without Warning

I've been having a problem on my computer for the past few months. I could be doing anything such as playing a high demanding game or a low demanding game. I could even be browsing the internet and my computer will randomly restart itself without any warning. I've tried turning off automatic updates and automatic system restarts. I update my drivers and my graphics card drivers regularly in Geforce Experience. Also, I dust out my computer almost every month. My computer is well taken care of as you can see, I simply don't know what the problem is. I get no error messages when the error occurs; Just a simple restart like normal. I am currently on Windows 10 and I never had this problem when I had WIndows 8.1 before I upgraded. I don't know why this happens and the other articles online really don't match my situation. All I want to know is how to stop this problem or how to check if my computer parts are failing. As a side-note, this has never happened twice in one boot-up. It usually occurs in the first few hours of getting on my computer initially. I've had this computer for 11 months and all parts were brand new. My temperatures are great on my pc as well.

About PC:
Processor: AMD Athlon x4 860k Quad Core Processor 3.70 GHz
Ram: 8GB (2x4GB) DDR3 1600MHz
Graphics card: GTX 960 2GB
Power Supply: EVGA 500w
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  1. Best answer
    random restarts without errors, well, its not windows... as you normally get some warning from windows.

    What model EVGA PSU is it? they appear in all 4 tiers of this, so its why I ask: http://www.tomshardware.com/forum/id-2547993/psu-tier-list.html

    you can test ram using: http://www.memtest86.com/

    Have you upgraded your bios as that too can help ?
  2. download hardware info 64 bit. set it to sensor and logging...watch your 12v rails make sure there holding.
  3. I must comment that up until recently, I had no spontaneous reboots, but recently, regardless of what I am doing, the OS simply reboots spontaneously, with no warning, and with no dialog boxes commenting on an unexpected reboot when it comes back up. It runs fine, no issues, then *reboot*, then works fine. If I have nothing running, eventually, it reboots. If I have anything running, eventually it reboots. If I run Windows 7, no reboot. If I run linux, no reboot. My laptop does it, my desktop does it. My surface hasn't yet done it. I run HWiNFO64, it registers zero Total Errors at the bottom. Everything is within tolerances, and no overclocking.

    I confess to becoming suspicious, but my point in writing this is to say that your circumstances seem eerily similar to mine, and you are not alone.

    Processor: AMD FX-8150 Octo-core
    RAM: 32Gb (4x8Gb) DDR3 1600MHz
    Graphics card: AMD R9 380
    Power Supply: Silverstone 1500W
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