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I have a problem that lasts for nearly half a year. PC hard-resets straight to BIOS POST (without BSOD) from time to time. PC isn't overclocked (at least intentionally). It doesn't look like it's connected to any specific activity i.e. may reset while just browsing Internet or playing a game or even in idle state at desktop. PC may work stable for a few days and then hard-reset five times a day.

My current OS is Windows 10. First thing I did was turning off automatic restarts and turning on writing minidumps. Then checked logs: https://pastebin.com/PPavraJZ

It's not clear what the problem is other than that it may be connected with loss of power.

Then I've took a minidump and put it into http://www.osronline.com/. Got https://pastebin.com/3aqeQNXi:

WHEA_UNCORRECTABLE_ERROR (124) A fatal hardware error has occurred.

I'm not sure how to interpret all that but to me it looked like hardware issue.

So thinking that it may be hardware issue I did the following:

  • Replaced old PSU.
  • Got memory out. Cleaned all slots with can of compressed air. Put it back.
  • Replaced thermal compound on CPU (used mx-2). Temperature dropped 5-6 degrees. At max load it now stays at about 70 degrees.
  • Updated to latest BIOS.
  • Reset all BIOS settings to AUTO or defaults.
  • Installed latest AMD chipset drivers. Selected optimized Ryzen power profile.
  • Removed all MSI software... just in case it overclocks something.
  • Ran memtest for half a day without issues.
  • Ran Prime95 for an hour without issues.

My current hardware:

  • Seasonic Titanium Prime 750W.
  • AMD Ryzen 1700 with stock Wraith Spire RGB cooler.
  • MSI B350 TOMAHAWK (MS-7A34). Latest BIOS (1.90 from 09/19/2017)
  • 16 GB DDR4 RAM (8+8). 1600.0 MHz (DDR4-3200 / PC4-25600) Corsair CMK16GX4M2B3200C16.
  • MSI GeForce GTX 1080 Aero OC 8GB DDR5X.
  • OCZ-VERTEX4 as primary SSD. Healthy.
  • Samsung SSD 960 PRO 512GB as secondary SSD. Healthy.
  • ASUS Xonar D2X.
  • USB keyboard and mouse.
  • KX-MB1500RU Panasonic Printer connected via USB.
  • Case is Thermaltake Tsunami Dream.

I'm out of ideas so asking for your help on how to diagnose and fix hard-resets further. Thank you.

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    Look at this answer for some ideas. – I say Reinstate Monica Jan 31 '18 at 1:34
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    use Windbg and the !errrec command with the value of arg2 to see why you get the 0x124 crash – magicandre1981 Jan 31 '18 at 16:18
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    ok, you have L1 Cache issue while reading data. The Ryzen is relatively new, so you have warranty and should RMA it – magicandre1981 Feb 1 '18 at 16:34
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    convert the value 0xbe802800000c0135 from the status to binary and look if you can find in any AMD documentation what each bit means. do you have a friend with a compatible Ryzen CPU that you can test? if this cpu works your one is faulty. – magicandre1981 Feb 2 '18 at 15:24
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    ok, thanks for the feedback. reply again when you get the new one. btw, notify me with @ myusername. currently I have to check the topic on my own to see if you replied or not. – magicandre1981 Feb 8 '18 at 16:42

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