EU Gigabyte Mainboard MC12-LE0 Re1.0 AMD B550 AM4 Ryzen

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Eric_on_Fire

New Member
Dec 18, 2019
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Does anyone have Secure Boot active on their MC12-LE0? Mine is on F20, and it just doesn't appear to have any factory keys that I can load. I reflashed F20 bios from with AMI Firmware Update Utility v5.16.04.0135 just in case something was missing: AFUWINx64.EXE image.bin /P /B /N /L /K /X
When I restore factory keys, nothing seems to happen and when I enable Secure Boot it warns that System is in Setup Mode: Secure Boot can be enabled when System in User Mode. Repeat operation after enrolling Platform Key (PK). When I try to update the Platform Key from factory default it fails.
Here's a screen recording of what I'm seeing:
 
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_Dejan_

Member
Aug 18, 2022
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Hi,

I have issue with one of my board which I order as backup...

Board do not POST, BMC network LED do not turn on(LAN LEDs turn on one connect with 10mbit another with 100mbit). BMC LED is solid ON and do not start blinking.

Im try connect to BMC UART but looks like it do not output anything... I use same adapter as on Gigabyte MJ11-EC1 boards and 115200 baudrate. Im try pressing ENTER in terminal but do not help.

Can I do something else? If I remove PSU and put 3.3V on BMC UART port will this make some difference?

Thanks for any hint how to continue.
 
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dbram

Member
Mar 3, 2021
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_Dejan_ said:
I have issue with one of my board which I order as backup...
Click to expand...
I had a similar issue at the time and got a replacement board from the German seller. I was allowed to keep the defective one.
I believe the LAN led is just the default state when receiving power. Not sure if my BMC led turned on, it certainly didn't blink either, will have to check that.

I looked at defective the board briefly. My best guess was to try to reflash the BMC and/or bios using one these bios programmers, but didn't actually go that far yet.The BMC is a 16pin version if I recall correctly (but for flashing only a couple of pins are actually used). I got myself one of these low cost flash adapters, but using them with clamps is apparently discouraged.
(As I had also a defective X9-SCL-F board that didn't want to POST, i tried a 8pin to flash that one's bios, and indeed it required several clamp-on attempts to read/verify correctly. after that I tried to flash the X9-SCL. the flash on that one worked, but did not unbrick that motherboard. )
After ordering the correct clamps, i managed to break the clamp to fit it on the BMC flash chip. hence my attempts for that are stalled now.

again, not sure if it will unbrick anything.

for what it's worth, when connecting the power supply, I belive the board goes into somekind of power-on loop, hearing some very light ticking sound. as if the flash for BMC could not be ready (correctly) and retries. it could of course just be some coil-whine too.
 
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_Dejan_

Member
Aug 18, 2022
73
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dbram thanks for reply. I will see what will seller said and offer tomorrow...Removing power and powering it by 3.3V pin do not make any change...

Does it need to be on one pin 3.3V? If I with multimeter(Powered off PSU) check with beeper which pin is GND I can find that only one beep. Then 2 pins next to it are TX and RX and then must be VCC which as I know must be 3.3V. But when I power on PSU there is no voltage on that pin...
I by mistake put multimeter on HOLD :) On pin is 3.3V.
 
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Gruenschnabel

New Member
Sep 23, 2025
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I’m currently running 2x Kingston Server Premier 32GB 3200MT/s DDR4 ECC CL22 DIMM 2Rx8 (Hynix C – KSM32ED8/32HC). A couple of weeks ago, I wanted to grab two more sticks, but the prices have skyrocketed. Then I started seeing all those Reddit threads about RAM and AI demand — now it all makes sense.

I’m looking for an alternative and thought I’d ask here for some collective wisdom, especially since I’ll be mixing two different kits? I assume it’s pretty much the same story for most kits anyway.
 
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helskor

New Member
Aug 26, 2023
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I use these kits in my machines running this board: Micron (Crucial) 32GB DDR4-3200 ECC UDIMM 2Rx8 CL22 SKU: MTA18ASF4G72AZ-3G2R
Though I doubt it can be found anywhere cheap, used or new. As you said, RAM is crazy atm
 
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Gruenschnabel

New Member
Sep 23, 2025
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helskor said:
I use these kits in my machines running this board: Micron (Crucial) 32GB DDR4-3200 ECC UDIMM 2Rx8 CL22 SKU: MTA18ASF4G72AZ-3G2R
Though I doubt it can be found anywhere cheap, used or new. As you said, RAM is crazy atm
Click to expand...
Thanks a lot! Will check about them
 
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Altirix

New Member
Nov 3, 2024
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RolloZ170 said:
try this to see hidden options.
Go to any config page, then press RightCtrl + RightShift then press F2, then the bios will display all hidden options.
PCIe GPU is called PEG
Click to expand...
Is there one of these button combos that unlocks the hidden AMD Overclocking (AMD Frequency) options VSOC/VDDG/VDDP/ MEM_VDDIO seems some bios version between F06 and F20 has hidden lots of these settings. not tried to flash but looks like i could mod the bios with the UEFI Editor.

rather annoying as the ecc memory i have is 2666mt. will easily do 3800mt with manual oc set.

The board on F06 not been able to get past 3600mt and bios has no working uclk 1:1 toggle so past 3200mt Rootkit Master is needed which cant seem to set MEM_VDDIO correctly.

Edit: Tried F11 and that seemed to work well. the MEM_VDDIO problem i was facing seems to be the fact MEM_VTT controls both MEM_VTT and MEM_VDDIO in a rather odd way.

F06
1763751579070.png
F20
1763751608056.png
 
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Krzysiek

New Member
Jul 11, 2023
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Hi,

I've just bought the Intel Arc 310 Sparkle card and I'm not able to boot into Proxmox — I get a login prompt, and after a few seconds the console freezes and the video output becomes unavailable.

I'm running BIOS version F20. Has anyone else encountered similar problems?
 
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