A different issue with B550M Pro VDH WIFI with 5700G

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Hi All,

This feels very similar to issues reported by jeseco and laurent but thought it different enough to warrant its own post.

System
CPU: AMD Ryzen 5700G
MB: MSI B550M PRO-VDH WIFI
BIOS: E7C95AMS.280
RAM: Corsair Vengeance LPX 16 GB (2 x 8 GB) DDR4-3200 CL16
SSD: Crucial P1 1TB M.2
PSU: Corsair CXM 550W 80+
Alternate PSU: EVGA SuperNOVA 650W 80G+
Monitor: Illyama 1440p 120Hz HDMI and VGA
KB & Mouse: Logitech wireless no idea beyond that, have tried with a generic USB mouse too

I'm building a new system for a friend with the specs above, I've flashed the BIOS to E7C95AMS.280 and everything looks good until I move the mouse or hit F7 then I get between 0 and 10 seconds before the system restarts itself, it appears that it can remain stable if I don't use the mouse or keyboard and other times it'll only stay on for a second or 2. This random restarting also happens when trying to install Windows 10, although I can use the mouse and keyboard it will just randomly restart during the process and I'll have to start it all again. I've tried various configurations of RAM sticks. This is the first thing I'd like to resolve.
The second thing I'd like help with, and this may be connected to the first, is I have managed to get the Windows 10 files installed but on booting now I get the Windows 10 rotating dots and then the screen goes blank, I've tried it with HDMI and VGA but nothing on either output, I suspect this could be a resolution issue but can't hold on a 1080p until later this week. Just to confirm even after getting this far going into the BIOS does still randomly restart.

Thanks for any help.
 
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If you tried different PSU and Memory I would suspect the board or CPU may also be a Short circuit in the system take out of case and test on cardboard box only connect the PSU to the board as may be a faulty case connector as well.
and if still doing it I would then try and test with other CPU on same board or test current CPU in another motherboard.

May be able to get parts tested at PC store near you.

If you unable to test you will have to decide what one to RMA first CPU or the Board.
 
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Hey Community,
I can add some info to this problem. My similar System:
CPU: AMD Ryzen 5700G with Box Cooler
MB: MSI B550M PRO-VDH WIFI
BIOS: 7C95v2C (2022-08-08)
RAM: Corsair Vengeance LPX 64 GB (2 x 32 GB) DDR4-3200 CL16 CMK64GX4M2E3200C16
SSD: none
PSU: bequiet BGT P6-470W

System crashes in UEFI and later in the startup process randomly. Only when CPU is set to 3.8 GHz (CBP or PBO are disabled), the system has an almost stable behaviour. I also posted the topic in the AMD community here: https://community.amd.com/t5/processors/ryzen-5700g-crashing-reboot/td-p/552787

My best guess is, that the mainboard is faulty and can't handle the frequency and power switches of the AMD Ryzen. Maybe it's only in a minority of these type of MSI boards.
 
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It's a very very strange problem! All test below were done, without any case or pc-tower. Just the mainboard with CPU/Cooler and RAM sitting next to the PSU.

I took the MSI board with RAM and CPU to the resellers testbench. It IS WORKING WITHOUT ERRORS on a bequiet PSU and with another cooler and display. No single system crash.

So, back to my office, plugged into my PSU, HDMI display and using the boxed cooler: it is CRASHING AGAIN. Switched to new PSU bequiet Straight Power 11 650W at the office. No difference. Not using the HDMI display, using DP or VGA cable instead. No difference, system is crashing randomly.

So I tried a SECOND VISIT at the resellers testbench. It IS WORKING WITHOUT ERRORS using the resellers power supply, PSU bequiet and display using DP cable. We also started Windows 10 from USB and executed prime benchmark. No single system crash.

So, back to my office for second test. Bequiet PSU is plugged into my UPS and with NO cable plugged into power connection of the room. Didn't unmount the cooler, CPU or RAM. Same mainboard like at the resellers testbench. No difference at the office, system is crashing randomly after start. Even if there is no electric connection to anything like the UPS. Maybe its the display, so unplugged the display from the UPS. Using network cable and bootable USB stick with unraid. Thus, only the network cable has a physical electrical connection to other components in the room. Surprisingly, unraid started and login to terminal was possible (just once!). Started prime benchmark, 1-2 minutes at full load and sadly the system crashed. Disabled the FI-switch of the entire office so that no device next to the office is disturbing the MSI board that is running on the new PSU plugged into UPS working on battery. MSI board is crashing randomly, even without display or keyboard connected.

I have another server in the room based on Intel CPU and Asrock mainboard. It is rock solid and never crashed a single time.
 
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ben.sann158902e0 said:
Hey Community,
I can add some info to this problem. My similar System:
CPU: AMD Ryzen 5700G with Box Cooler
MB: MSI B550M PRO-VDH WIFI
BIOS: 7C95v2C (2022-08-08)
RAM: Corsair Vengeance LPX 64 GB (2 x 32 GB) DDR4-3200 CL16 CMK64GX4M2E3200C16
SSD: none
PSU: bequiet BGT P6-470W

System crashes in UEFI and later in the startup process randomly. Only when CPU is set to 3.8 GHz (CBP or PBO are disabled), the system has an almost stable behaviour. I also posted the topic in the AMD community here: https://community.amd.com/t5/processors/ryzen-5700g-crashing-reboot/td-p/552787

My best guess is, that the mainboard is faulty and can't handle the frequency and power switches of the AMD Ryzen. Maybe it's only in a minority of these type of MSI boards.
Click to expand...
Topic is a bit oldish
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thanks for you hint Alan J T.

I finally found a solution: I got a brand new MSI mainboard (exactly the same type) and it works without any errors. So, it was definitely the mainboard, most probable the onboard voltage converter or power supply for the CPU.
 
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