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X399 Windows 10 (1909) locking up during idle

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Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
Printed Date: 28 May 2024 at 9:35pm
Software Version: Web Wiz Forums 12.04 -

Topic: X399 Windows 10 (1909) locking up during idle
Posted By: rewtdawg
Subject: X399 Windows 10 (1909) locking up during idle
Date Posted: 06 Dec 2019 at 12:13am

MB: ASrock X399 Phantom Gaming 6 (BIOS 1.30)
CPU Threadripper 2920x Retail Box
RAM: Corsair Vengeance RGB Pro 16GB (2x8GB) DDR4 3600 (XMP profile applied)
GPU: EVGA RTX2080 Super FTW3
Storage: XPG GAMMIX S11 Pro 512GB NVME/ Inland 256GB NVME

Clean install Windows 10 X64 Pro (build 1909
Clean install AMD Chipset drivers: (Nov 25 2019)

System boots and runs from 512GB NVME in "M2_3" slot. "M2_2" is populated with Inland 256GB NVME.
"M2_1 and M2_4 are unpopulated"
System memory is installed in "DDR4_A2" and "DDR4_B2"
EVGA SuperNOVA 850 G3 power supply is plugged into both "ATX12V1" and "ATX12V2"
Eco mode switch is off on power supply

BIOS is @ default settings except CPU_Fan2 is set to W_PUMP and XMP profile applied @ 3600 for RAM.

Description of problem:

Windows 10 freezes/hard locks while idle. Occasionally I will get a BSOD for DPC_Watchdog_Violation. Nothing meaningful is ever logged in event viewer

System never locks under load (even 12 hour gaming sessions).
This really feels to me like some sort of power management issue.

I have tried Disabling C3/S3 in the BIOS, disabled all Virtualization support (IOMMU etc..) nothing seems to help.

ASrock has to be aware of this issue, but I cannot get them to respond via the instructed communication channels. I find it hard to believe that a company owned by ASUS would just ignore support requests.

ASRock if you are reading this: This is the holiday season in the United States which you should be well aware of: You should staff support accordingly during the next 2 months. Support after the sale is 100% required in the US if you want to do business here.


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