AMD Motherboards - M3N78D MAC address flash issue

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M3N78D MAC address flash issue

Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=113376
Printed Date: 09 Nov 2025 at 3:58am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: M3N78D MAC address flash issue

Posted By: Markyuni
Subject: M3N78D MAC address flash issue
Date Posted: 08 Nov 2025 at 7:54pm

Hi there.
I would like to flash the MAC address for my M3N78D, as it shows the common issue of "MAC ADDRESS ARE INVALID IN BOTH CMOS AND FLASH" on POST; however, none of the MAC tools available on the support page work.

As an addendum, I believe this is an NVIDIA motherboard but I found no NVIDIA forums, so I hope this is not a problem.

Replies:

Posted By: Markyuni
Date Posted: 09 Nov 2025 at 12:44am

If it serves any help, the message for the command reads:

"Select ModelName Config=M3N78D
===== LIST ALL DEVICES =====
Bus:00, Dev:0A, Fun:00, VidDid:076010DE, SubVidDid:07601849 (Slot:-1)
PciDeviceCount=1
OnBoardDeviceCount=1
DetectLanCount=0
Unsupported!

ReturnCode:1"