AnsweredAssumed Answered

3700x failed to boot into Windows 10 and became unstable after installing the Windows update KB4512508

Question asked by keithyip on Sep 17, 2019
Latest reply on Sep 19, 2019 by keithyip

My 1 month old PC could not boot after install the Windows Update KB4512508. It worked fine with Ubuntu 19 though. The hardware config was


Ryzen 3700x
Gigabyte X570 Aorus Elite
G.SKILL Ripjaws V Series 16GB (2 x 8GB) F4-3200C14D-16GVK
Gigabyte GeForce RTX 2070 SUPER WINDFORCE OC 8G
Samsung SSD 860 EVO 1TB
Anetec NE650 Gold (650W)


The BIOS was F4j - AMD AGESA Combo-AM4 The BIOS config which was not default nor auto was


XMP enabled
PBO enabled
MCLK 3733MHz
UCLK 1866MHz
FCLK 1866MHz
MEM VDDIO 1.35v (1.38v reported)


The OS is Windows 10.


The config pass memtest 100%. It was stable under Cinebench R20, Furmark, code compilation, non-AVX all core workload and YouTube video playback. There were no random instant shutdowns before installing the update. After installing the update, my PC could not boot anymore. It shutdown in the screen there was the Aorus logo and a spinner (I suppose it was the Windows loading screen with the motherboard changed it). There were different kinds of blue screens after failing to boot. The stop codes were


  • 0xc000021a


Sometimes blue screens saying collecting info appeared but my PC shutdown before reaching 100%

I changed MCLK 3600MHz with matched UCLK and FCLK. My PC logged in Windows but shutdown itself instantly. It finished logging with 3400MHz but instantly shutdown after playing a YouTube video for 1s. I changed the MCLK to auto which was 3200MHz. My PC worked mostly but there was still about 1 instant shutdown randomly each day. It did not restart itself.


Given the extremely close proximity in time, I suspect that KB4512508 was the cause. This update cannot be uninstalled. There was an unknown error when I tried to uninstall it. Sadly, I have not set up any full drive backup yet. I could not verify my first hypothesis easily.


My second guess is that I lost my silicon lottery hard. My CPU/RAM degraded by overclocking even without raised voltages just after 1 month.





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