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Thread: Random shutdowns then now no POST/black display - stumped!

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    Random shutdowns then now no POST/black display - stumped!

    Parts list

    • i5 4690K
    • 2x4GB Kingston DDR3-1866 CL9
    • MSI R9 390 8GB
    • Fractal Design Newton R3 1kW - going to expand to CFX this summer when I get my bonus


    Current problems:
    Currently rig is not posting/black screen. Previously started randomly rebooting when gaming.

    Things I've done to troubleshoot

    • When my rig was still working, I ran Heaven for approx 2hrs with no artifacts/crashing. Briefly ran Intel Burn test on max mem for 5 runs and all stable. Everything was returned to stock clocks/values and crashing would still occur after approx 1. hour.
    • I've removed my R9 390 and also reset CMOS and tried to use the IGP - no dice. Still no post/black screen.
    • Something else I also tried was to use a different power strip/wall socket but still no dice.




    I'm absolutely stumped on where to start - any ideas on what to RMA first? I have no spare components to use/friends with spare parts.
    This rig/setup has been rock solid for the past 7 months or so.

    I initially planned to RMA my motherboard first - but no sure if thats what I should do first....

  2. #2
    Anthropomorphic Personification shaithis's Avatar
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    Re: Random shutdowns then now no POST/black display - stumped!

    Try with one stick of RAM at a time.

    After that, it has to be PSU or motherboard. Random rebooting would make me think PSU ahead of motherboard...
    Main PC: Asus Rampage IV Extreme / 3960X@4.5GHz / Antec H1200 Pro / 32GB DDR3-1866 Quad Channel / Sapphire Fury X / Areca 1680 / 850W EVGA SuperNOVA Gold 2 / Corsair 600T / 2x Dell 3007 / 4 x 250GB SSD + 2 x 80GB SSD / 4 x 1TB HDD (RAID 10) / Windows 10 Pro, Yosemite & Ubuntu
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    Re: Random shutdowns then now no POST/black display - stumped!

    Quote Originally Posted by shaithis View Post
    Try with one stick of RAM at a time.

    After that, it has to be PSU or motherboard. Random rebooting would make me think PSU ahead of motherboard...
    Will do.

    Yeah - since it was "Heaven" stable for a good 2 hours it shouldn't be the GPU. But it would only crash/random reboot after gaming for an hour or so. I didn't really do a stress test on the CPU other than 5 runs of intel burn test at max mem.

    I'll give single RAM stick booting a go sometime this week. Do you reckon I should stick to the IGP rather than my R9 390? I've reset the CMOS but had no dice on display.

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