Intel Motherboards - Sleep problem with Z68 Extreme3 Gen3

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Sleep problem with Z68 Extreme3 Gen3

Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=12611
Printed Date: 08 Nov 2025 at 12:36am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: Sleep problem with Z68 Extreme3 Gen3

Posted By: warning077
Subject: Sleep problem with Z68 Extreme3 Gen3
Date Posted: 07 Oct 2019 at 7:02pm

Few days ago I updated the BIOS on my Z68 Extreme3 Gen3
board from 1.30 to 2.30 BIOS. Processor is i5 2500k with
4x 4GB ram (2 mixed pairs of Corsair Vengeance)

Now I notice that when the computer goes to sleep and then
wakes, the following error is present in Event Viewer:

Event 137: Kernel-Power
The system firmware has changed the processor's memory type range registers (MTRRs) across a sleep state transition (S4). This can result in reduced resume performance.

Could this error be due to the new BIOS - I didn't notice
this error with 1.30 BIOS, and if yes, can this be somehow
repaired? I searched through the internet, however, did not
find any solution that would work (beside disabling sleep).