Tomahawk B550 Motherboard and Ryzen 9 5900x chip. Cant get into bios to switch onboard GPU off. Help?

Joined
May 2, 2022
Messages
7
Hi, I've been patiently waiting for MSI Technical to sort my problem out with a "ticket" but I'm sure someone here has come across the very same problem as I have.

Tomahawk B550 motherboard has GPU built-in but my Ryzen 5900x Chip doesn't have the capability to talk to my onboard GPU.
I knew this to be the case. They're listed as compatible but I need to use an external PCI-e graphics card. No problem.
I pulled out a fully working RX580 ARMOR 8GB OC graphics card and fitted it in the PCI-e slot. Added the extra power cables to the graphics card.
PC boots up. It goes through the process but continues to stop with the LED for the GPU problem.
How do I get into the Bios as my keyboard only comes alive when it stops at the LED for GPU. I've held down the "delete" button but it does nothing at all. I've tried ESC and F1 all the way through to F12. Can anyone help? Is there any way for me to get into the Bios and turn the onboard GPU off?

System configure:
1. MSI MAG B550 TOMAHAWK Motherboard ATX, AM4, DDR4, Dual M.2, LAN, USB 3.2 Gen2, Front Type-C,
Mystic Light RGB, HDMI, DisplayPort, AMD Ryzen 5000 Series

2. Patriot Viper Elite II DDR4 128GB(4 x 32GB) 3600MHz

3. RYZEN 9 5900X PROCESSOR.

4. 512GB M.2 MEMORY (for Slot 1)

5. 512 M.2 MEMORY (for Slot 2)

6. 1TB SSD hard drive SanDisk

7. DEEPCOOL GAMMAXX GT BK, CPU Air Cooler, SYNC RGB Fan 4 Heatpipes, 120mm RGB Fan,

8. Safekom Silicone Heat Sink Thermal CPU Processor Compound PC Grease Paste

9. Aerocool Integrator 850 W 80 Plus Bronze Power Supply Unit with UK 3 Pin Power Lead

10. MSI MAG VAMPIRIC 010 Mid Tower Gaming Computer Case 'Black, 1x 120mm ARGB Fan, RGB Front Panel,
Tempered Glass, MSI Center, ATX, mATX, mini-ITX'
 

mikeandsharond

New member
CORPORAL
Joined
Jun 29, 2019
Messages
17
The B550max doesn't have an onboard gpu. Any integrated gpu's would be part of the cpu, and it would have a "g" suffix. To enter the bios, press and hold the delete key as soon as the power is turned on. As to the vga lite, it also could indicate a problem with a M.2 device. Suggest you pull one of the M.2 devices and see what happens. Then try with the pulled device installed and the other removed.
 

laurence1211

Well-known member
PRIVATE E-2
Joined
Jun 28, 2020
Messages
1,795
Hi, I've been patiently waiting for MSI Technical to sort my problem out with a "ticket" but I'm sure someone here has come across the very same problem as I have.

Tomahawk B550 motherboard has GPU built-in but my Ryzen 5900x Chip doesn't have the capability to talk to my onboard GPU.
I knew this to be the case. They're listed as compatible but I need to use an external PCI-e graphics card. No problem.
I pulled out a fully working RX580 ARMOR 8GB OC graphics card and fitted it in the PCI-e slot. Added the extra power cables to the graphics card.
PC boots up. It goes through the process but continues to stop with the LED for the GPU problem.
How do I get into the Bios as my keyboard only comes alive when it stops at the LED for GPU. I've held down the "delete" button but it does nothing at all. I've tried ESC and F1 all the way through to F12. Can anyone help? Is there any way for me to get into the Bios and turn the onboard GPU off?

System configure:
1. MSI MAG B550 TOMAHAWK Motherboard ATX, AM4, DDR4, Dual M.2, LAN, USB 3.2 Gen2, Front Type-C,
Mystic Light RGB, HDMI, DisplayPort, AMD Ryzen 5000 Series

2. Patriot Viper Elite II DDR4 128GB(4 x 32GB) 3600MHz

3. RYZEN 9 5900X PROCESSOR.

4. 512GB M.2 MEMORY (for Slot 1)

5. 512 M.2 MEMORY (for Slot 2)

6. 1TB SSD hard drive SanDisk

7. DEEPCOOL GAMMAXX GT BK, CPU Air Cooler, SYNC RGB Fan 4 Heatpipes, 120mm RGB Fan,

8. Safekom Silicone Heat Sink Thermal CPU Processor Compound PC Grease Paste

9. Aerocool Integrator 850 W 80 Plus Bronze Power Supply Unit with UK 3 Pin Power Lead

10. MSI MAG VAMPIRIC 010 Mid Tower Gaming Computer Case 'Black, 1x 120mm ARGB Fan, RGB Front Panel,
Tempered Glass, MSI Center, ATX, mATX, mini-ITX'
What m.2 drives do you have exactly?
 
Joined
May 2, 2022
Messages
7
The B550max doesn't have an onboard gpu. Any integrated gpu's would be part of the cpu, and it would have a "g" suffix. To enter the bios, press and hold the delete key as soon as the power is turned on. As to the vga lite, it also could indicate a problem with a M.2 device. Suggest you pull one of the M.2 devices and see what happens. Then try with the pulled device installed and the other removed.
Thanks I'll try that in the morning.
 
Joined
May 2, 2022
Messages
7
Can you also try the GPU in the Lower PCIEx16 slot, sometimes older GPU on the PCIE 4.0 slot dont work to well but will work on the PCIE 3.0 slot
If it boots to BIOS set you PCI-E1 Gen Switch from AUTO to PCIE Gen3
View attachment 159768
Sadly, tried with no M.2 drives or SSD fitted. No luck there. Tried the graphics card in the other pci-e slots. Still just get a blank screen.
 

Alan J T

🙈 🙉🐝 🤬😈
Global Moderator
Joined
Sep 11, 2020
Messages
7,785
Sadly, tried with no M.2 drives or SSD fitted. No luck there. Tried the graphics card in the other pci-e slots. Still just get a blank screen.
Ca you do a BIOS flash vir the Flashback option may be you need to update the bios.

Aslo can you lost your GPU models and Brand

Some directions for you



FOR BIOS FLASHBACK

Following Directions are for windows based OS

Right Click on the Downloaded Bios Zip File, select properties if you see the message this file is blocked by windows tick the box to unblock and click OK.

When in windows File Explorer make sure that you select the View tab and Tick the box Show Hidden Files and File Name Extensions.

Extract the BIOS file from the Downloaded ZIP file Open the folder it was extracted to.

Right click on the BIOS file, select copy and then paste it into a 32GB or smaller USB drive drive Formatted to FAT32.

When in Windows File Explorer make sure that you select the View Tab and Tick the box Show Hidden Files and File Name Extension.

Now rename the BIOS file to MSI.ROM

There should be no other files or folders on the USB drive, just the BIOS file you have renamed to MSI.ROM


FlashBack can be used on a fully assembled PC even if CPU is one of the new 5xxx series.

PC must be turned off for BIOS Flashback to be started do not turn on your PC the Bios Flashback will do it for you




Plug the USB Drive in to the USB port just below the Bios Button,

Do not touch any Jumpers on the Motherboard

Push the FlashBack button and then release it,

About 5 seconds later a led just above the USB port will start to flash, after 15 seconds of so the speed of the flashing light will double this is the writing to the BIOS period.

Once done writing to the it will stop flashing and PSU will turn off

For 16MB BIOS it will take about 4 to 5 minutes, and flashing stops.

For 32MB BIOS it will take 6 to 7 minutes, and flashing stops.

People have said that it may turn back on if so just turn off and unplug the PSU.

And Bios should be flashed.

Failed BIOS flashback is one of three way

One- it never stops flashing
Two- Solid LED no flash and stays on till you power of PC
Three- it flashes four of 5 times and then stops


Successful it will flash for about 15 to 20 seconds it will then it will start flash quicker for 4 to 6 minutes and then turn off.
 
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