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  1. #1
    New ROGer Array
    Join Date
    Mar 2019

    At my wits end! PC Started to Freeze/BSOD! Puzzler

    Here's the specs:

    ASUS ROG Rampage V Edition 10
    Intel 5960X w/ Corsair H105 AIO & Noctua Fans x2
    Corsair 16G x8
    GTX 1080TI MSI SeaHawk x2
    Corsair RM1000X PSU
    OS is Windows 7 Pro

    The system was running rock solid stable up to around a month ago. The CPU was modestly overclocked to 4.2GHz by only changing the VCore to 1.3V. The RAM was XMP 3200 profile that it was designed for. Nothing else was overclocked or modded in any way.

    Games and programs started crashing randomly, so I suspected RAM. I removed each of the sticks and tested them individually with MemTest 86+. The testing process itself was quite odd. On various passes the RAM would either test all OK or have some errors with no particular pattern. But eventually I was getting a reproducible error with 1 stick of RAM (the other sticks all tested OK). So that RAM is now shipped off to Corsair for RMA. The remaining sticks of RAM have all tested good. Currently there's 4x16G sticks inside.

    Then the PC started crashing again (BSOD with Error 0x124). A bit of googling seems to imply that that error is most likely to do with overclocking. So I reset all the settings in the BIOS to Auto, with the CPU running at the stock 3GHz and Turbo to 3.5GHz. RAM is now on 2133MHz.

    And the PC still continues to crash, especially with Prime95 or ROG Benchmark. The temperature monitor doesn't show the CPU running hot (only gets to around 50c or so). If I go with 4.2GHz at VCore 1.3V it's an instant crash every time. If I leave it at stock 3GHz with Turbo to 3.5GHz, then it maybe crashes 50% of the time. Sometimes it BSOD 0x124 and sometimes the PC just freezes. It doesn't seem to crash when I max out the CPU doing other tasks, Eg. compressing with 7 Zip. Only occasionally with games and almost always with the benchmarking tools. I've run the Intel CPU diagnostic and it passes on stock @ 3GHz and 4.2GHz @ 1.28V. Using 7Zip to compress 15GB of data is still OK.

    Nothing else about the hardware has changed in anyway. No recent major updates to drivers or windows.

    Any thoughts? Could a faulty RAM stick have caused all this mess? Or is it more likely to be CPU (or something else) and has caused the RAM stick to be faulty? Or is it something else completely all together?

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