MAG B550 Tomahawk stopped passing post with XMP

tiokeida152e02d1

New member
Joined
Jun 26, 2022
Messages
3
Hello everyone,

Just noticed that my mobo stopped pasting POST, keeping CPU led debug on after every "cold boot" when using XMP on memories.
Strangely enough is that I can use my computer normally by pressing the reset buton on chasi after getting stuck on state described before.

Does anyone experiencing the same issue or willing to suggest any solution for this?

System Specs:
MOBO: MAG B550 Tomahawk (bios AGESA 1.2.0.7)
CPU: AMD Ryzen 7 3800XT
RAM: 4x8GB Corsair Vengeance RGB Pro 3000MHz
GPU: Nvidia Geforce RTX 3060Ti
PSU: EVGA 850W 80 Plus Bronze
 

SumGuy

Member
PRIVATE E-2
Joined
May 17, 2020
Messages
62
I was having problems getting my system stable with XMP enabled on my board (X470 Gaming Plus MAX). Even if I set the timings manually, I could only run my RAM at 2666 MHz until I disabled "MEMORY FAST BOOT" in the BIOS.

Maybe give this a try...

- First, disable XMP in the BIOS, save and reboot back to BIOS.

- Then go to "BIOS > OC Settings > MEMORY FAST BOOT" and disable MEMORY FAST BOOT, save and reboot to Windows. (It may take longer to reboot due to memory training with MEMORY FAST BOOT disabled.)

- Give it a minute and reboot back to BIOS and re-enable XMP.

- Go back into Windows and check for stability. Maybe reboot a couple times to make sure it's solid.

That's the only thing that works for me. There are a lot of people having problems with XMP right now. I've seriously tried every suggestion I could find, other than rolling back to an earlier BIOS. All earlier versions I've used give me USB issues. So until they fix it, I have to choose between USB failures, slower RAM speed, or slower boot times. I can deal with slightly longer boot times.

I have a feeling that some PC's are having trouble with memory training being saved/stabilized in these newer BIOS versions. I could be wrong, but it's worth trying. I seriously doubt I'm the only one it works for.
 

Alan J T

🙈 🙉🐝 🤬😈
Global Moderator
Joined
Sep 11, 2020
Messages
9,753
Hello everyone,

Just noticed that my mobo stopped pasting POST, keeping CPU led debug on after every "cold boot" when using XMP on memories.
Strangely enough is that I can use my computer normally by pressing the reset buton on chasi after getting stuck on state described before.

Does anyone experiencing the same issue or willing to suggest any solution for this?

System Specs:
MOBO: MAG B550 Tomahawk (bios AGESA 1.2.0.7)
CPU: AMD Ryzen 7 3800XT
RAM: 4x8GB Corsair Vengeance RGB Pro 3000MHz
GPU: Nvidia Geforce RTX 3060Ti
PSU: EVGA 850W 80 Plus Bronze
You can also try a previous BIOS 1.2.0.6 may work better or 1.2.0.3 do not use 1.2.0.5
 

tiokeida152e02d1

New member
Joined
Jun 26, 2022
Messages
3
I was having problems getting my system stable with XMP enabled on my board (X470 Gaming Plus MAX). Even if I set the timings manually, I could only run my RAM at 2666 MHz until I disabled "MEMORY FAST BOOT" in the BIOS.

Maybe give this a try...

- First, disable XMP in the BIOS, save and reboot back to BIOS.

- Then go to "BIOS > OC Settings > MEMORY FAST BOOT" and disable MEMORY FAST BOOT, save and reboot to Windows. (It may take longer to reboot due to memory training with MEMORY FAST BOOT disabled.)

- Give it a minute and reboot back to BIOS and re-enable XMP.

- Go back into Windows and check for stability. Maybe reboot a couple times to make sure it's solid.

That's the only thing that works for me. There are a lot of people having problems with XMP right now. I've seriously tried every suggestion I could find, other than rolling back to an earlier BIOS. All earlier versions I've used give me USB issues. So until they fix it, I have to choose between USB failures, slower RAM speed, or slower boot times. I can deal with slightly longer boot times.

I have a feeling that some PC's are having trouble with memory training being saved/stabilized in these newer BIOS versions. I could be wrong, but it's worth trying. I seriously doubt I'm the only one it works for.
Thanks for the advice, I'll give it a try!

You can also try a previous BIOS 1.2.0.6 may work better or 1.2.0.3 do not use 1.2.0.5
I planned to do this, but my fear is that the USB issues comes back all over again.
 

tiokeida152e02d1

New member
Joined
Jun 26, 2022
Messages
3
I was having problems getting my system stable with XMP enabled on my board (X470 Gaming Plus MAX). Even if I set the timings manually, I could only run my RAM at 2666 MHz until I disabled "MEMORY FAST BOOT" in the BIOS.
Man, your tip saved my life. Now I can use my PC normally after a cold boot without the hassle of pressing reset button every time after powering it up.
It's also not taking SO much time to fully boot to OS right now, just 45 seconds counting all the trash that I use to be started with Windows.
 

SumGuy

Member
PRIVATE E-2
Joined
May 17, 2020
Messages
62
Awesome, glad it works for you. Hopefully more people with XMP stability issues give it a try. Maybe it can help AMD/MSI pin down the problem. I just don't have time to deal with tech support, or I'd submit a ticket.

My system takes about the same amount of time to boot, give or take a few seconds. That's not too bad I guess.
 

SumGuy

Member
PRIVATE E-2
Joined
May 17, 2020
Messages
62
USB problems was sorted in 1.2.0.3 for a lot of users
I never tried AGESA v1.2.0.3 because it's not available on my MB's support page & since my board doesn't have flashback, I wasn't comfortable downloading one of the two or three different versions of it from an unofficial link.

It's still a good idea for someone to look into the XMP and/or MEMORY FAST BOOT issues on the newer BIOSes so they can either fix it, or let us know if any older hardware will be unsupported going forward.
 

Alan J T

🙈 🙉🐝 🤬😈
Global Moderator
Joined
Sep 11, 2020
Messages
9,753
Older hard ware should not have been affected
and MSI is aware and working on it.
But it a catch 22 if they don't enable some stuff like UEFI,TPM and Secure boot they get a flood of complaints about WIN 11 not installing and once enabled it seems to cause some problems for other users.
 

SumGuy

Member
PRIVATE E-2
Joined
May 17, 2020
Messages
62
Older hard ware should not have been affected
and MSI is aware and working on it.
But it a catch 22 if they don't enable some stuff like UEFI,TPM and Secure boot they get a flood of complaints about WIN 11 not installing and once enabled it seems to cause some problems for other users.
Sorry, I didn't mean for that to be taken as an assumption that older hardware would actually be unsupported. Although it does seem odd that SMU Checker doesn't show any updates to the 3xx0 CPU's on the newer BIOSes, and some people's issues disappear by installing the newer CPU's...

I know there's a ton of things to try to balance with all the new hardware/software out there. Exciting and frustrating times for sure.
 
Top