Warm Reboot / Hanging Restart problem with Intel Arc Pro B50 and Gigabyte AM4 B550I AORUS PRO AX Mot

[telsauers]

Sorry for the ChatGPT-ish support request but I need this to be as understandable as possible. 

Issue: Intel Arc Pro B50 causes system hang on warm reboot (restart) on Gigabyte B550I AORUS PRO AX

Product: Intel Arc Pro B50
Driver: Latest Intel Arc Pro Graphics driver (installed fresh)
Download link used:
https://www.intel.com/content/www/us/en/download/741626/intel-arc-pro-graphics-windows.html

Problem Description

After installing an Intel Arc Pro B50, the system fails to complete warm reboots (Restart). When restarting from the operating system, the display signal is lost (no image), while the system remains powered on (fans spinning, system appears hung).

Cold boots (Shutdown → Power On) work perfectly and consistently.
The issue only occurs during warm reboots.

This is a new system setup, and no other GPU drivers were ever installed on this OS instance besides the Intel Arc Pro driver.

Critical Impact

Because “Save & Exit” in BIOS triggers a warm reboot, the system hangs immediately after saving BIOS changes when the Arc Pro B50 is installed.
As a result, BIOS configuration changes cannot be applied while the Arc GPU is installed.

The only way to modify BIOS settings is to temporarily install an NVIDIA GPU, which has no restart issues.

System Configuration

• Motherboard: Gigabyte AM4 B550I AORUS PRO AX

• BIOS: Latest available BIOS (successfully updated)

• CPU: AMD Ryzen 5 5500

• Memory: 16 GB Corsair Vengeance DDR4

• GPU: Intel Arc Pro B50

• OS: Windows 11 (fresh install; no prior GPU drivers present)

Observed Behavior Summary

Action Result

Cold boot (Shutdown → Power On)	Works normally
Warm reboot (Restart from OS)	Hangs, no display output
BIOS Save & Exit	Hangs (warm reboot path)
BIOS access after cold boot	Works
NVIDIA GPU installed	Restarts normally
Arc Pro B50 on another motherboard	Works normally

Troubleshooting Performed

• Updated motherboard BIOS to the latest version

• Installed latest Intel Arc Pro driver (clean system)

• Tested Arc Pro B50 with a different, known-good PSU

• Tested Arc Pro B50 in an older motherboard → no restart issues

• Tested NVIDIA GPU in the same B550I motherboard → restarts normally

• Confirmed issue is reproducible and consistent

Conclusion Based on Testing

• GPU is not defective (works on another motherboard)

• Power supply is not the cause

• OS / driver contamination ruled out (fresh system)

• Motherboard functions normally with NVIDIA GPU

This strongly suggests a compatibility or firmware interaction issue between the Intel Arc Pro B50 and the Gigabyte B550I AORUS PRO AX during warm reboot / PCIe re-initialization.

Request

I am requesting investigation into:

• Warm reboot / PCIe re-initialization behavior of Intel Arc Pro B50 on AMD B550 (ITX) platforms

• Any known firmware or driver issues related to restart hangs / black screen on warm reboot

• Whether a driver or GPU firmware update is planned or available to address this behavior

[KentRusselP_Intel]

Hello Telsauers,

Thank you for reaching out to the Intel Community Forum. I appreciate you taking the time to share your concern, and I want to assure you that I am here to help you resolve this issue.

To better understand the problem you are experiencing and to provide you with the most accurate and effective support, I kindly ask you to provide some additional information about your system and configuration:

1. PCIe Slot Generation: Could you please confirm which PCIe slot generation the B550I motherboard is operating at when paired with the Arc Pro B50 graphics card? This helps us understand the bandwidth and compatibility context.
2. BIOS Settings:

• Is the "Fast Boot" option enabled in your BIOS? This setting can affect initialization timing and device detection.
• What is the current setting for "AC Power Loss" behavior in BIOS? This determines how the system behaves after power interruptions.

1. Windows Power Management:

• Does the issue persist if you disable GPU power management within Windows? This can help isolate if power management features are contributing to the problem.
• What happens if you switch the Windows Power Plan to "High Performance"? This setting can influence device performance and stability.

1. System Restart Behavior:

• Have you tried adding a delay before restarting the system? For example, using the command shutdown /r /t 10 to initiate a restart with a 10-second delay. This can sometimes help with hardware initialization issues.

1. Safe Mode Testing:

• Does the issue occur when you restart the system in Safe Mode? Safe Mode loads minimal drivers and can help identify if third-party software or drivers are involved.

1. Display Connection:

• Are you using a mini DisplayPort (mDP) connection from the Arc Pro B50 to your monitor? Knowing the exact connection type can assist in troubleshooting display-related issues.

To further assist you, it would be very helpful if you could provide the Intel® System Support Utility (SSU) logs from your device. These logs contain detailed information about your hardware and software environment, which is essential for thorough troubleshooting.

Please follow these steps to generate and share the logs:

1. Download and run the Intel® SSU application on your system.
2. The tool will create a text file containing your system information.
3. For detailed instructions, please refer to the Help Guide for the Intel® System Support Utility
4. Once you have the file, please attach it to your response here in the forum.

If you have any further questions or need additional assistance, please do not hesitate to reach out. I am here to support you every step of the way.

Best regards,

Kent Russel P.

Intel Customer Support Technician

[telsauers]

1. It is running at pcie 3.0x8, as the ryzen 5 5500 is a pcie 3.0 chip and the B50 is pcie 5.0x8. The motherboard supports up to pcie 4.0x16.

2. Fast boot is disabled. In my BIOS, there is no "AC Power Loss" setting. However, under "Platform Power" there is a setting called "AC Back", which has options of "Memory, Always On, and Always Off". It's currently set to "Always off".

3. I did not previously, but just tried with no success. Switching to "High Performance" has no success either.

4. I just tried a restart delay with no success. 

5. I just tried to restart into safe mode with no success.

6. I am using a miniDP to DP adapter, with a DP cable going into my monitor. 

To make matters worse, resizeable bar is also disabled in the intel graphics software app despite it being set to "auto" in my BIOS (note, the only options are auto or disabled), with CSM disabled and above 4g decoding enabled. 

Attached is the .txt from the SSU app. 

[hege]

I am having the same issue on X470 platform with PCIe3.0 CPU (5750G) as well: https://community.intel.com/t5/Graphics/Intel-B50-UEFI-boot-issue-on-X470-system/m-p/1733252#M148413

Cold boot after PSU power cycle makes the B50 show up, warm reboot or entering the BIOS makes it boot loop a couple times and then it's no longer recognized.

[telsauers]

NEW DEVELOPMENT: whenever I perform a system reboot and the system hangs, it also resets my BIOS settings to default, effectively disabling CSM and anything else I had changed to optimize the B50.

I discovered this because I inserted the nvidia gpu, enabled csm, resizable bar, 4g decoding, etc, then restarted and inserted the B50. Boom. Resizeable bar enabled. Then I restart the system with the B50 in, and the system hangs. I shut it down completely, start up with the B50 and now BIOS settings are back to default. 

[telsauers]

I mixed up enable/disable in my description. I am FULLY AWARE that CSM needs to be disabled. I just mis-typed. 

[KentRusselP_Intel]

Hi Telsauers,

I hope this message finds you well, and thank you for your prompt response. Based on the information so far, it appears that the issue you are experiencing is related to BIOS corruption or a reset occurring during warm reboot cycles when using the Arc Pro B50. To assist us in diagnosing and resolving this problem more effectively, could you please provide detailed answers to the following questions:

1. Does the BIOS reset happen every single time you perform a restart with the Arc Pro B50 installed, or is it an intermittent occurrence?
2. Which BIOS settings are reverting to their default values? Is it all BIOS settings, or are only specific settings such as those related to PCIe being reset?
3. Upon the next boot after the reset, does the BIOS display any error messages, such as a "CMOS checksum error" or any other warnings?
4. Is the BIOS date and time also reset to default, or is the reset limited only to configuration settings?
5. What happens if you perform a "Reset" operation from within the BIOS setup menu itself (not using Save & Exit) while the Arc Pro B50 is installed? Does this trigger the same reset behavior?
6. Does the BIOS reset issue occur if you restart the system from Safe Mode with the Arc Pro B50 installed?
7. Could you confirm the exact BIOS version currently running on your system? For example, is it version F21?
8. What is the current setting for "AC Power Loss" behavior in BIOS? Is it set to "Always Off," "Always On," or "Last State"?
9. If possible, does this BIOS reset issue also occur when the Arc Pro B50 is installed in a different PCIe slot on the motherboard?

Please feel free to reach out if you need any clarification on these questions or if you have additional information that might help us investigate this issue further.

Best regards,

Kent Russel P.

Intel Customer Support Technician

[telsauers]

I have made a new discovery. Note I did not try any of your suggestions in your previous message yet. I swapped my Ryzen 5 5500 for a Ryzen 5 5600x and I am no longer having any of the issues I described. So the culprit is not the motherboard, it is the CPU. Please explain to me why the 5500 will cause the system to hang with the B50 but the 5600x does not? I want to use the 5500 in this setup, as I took the 5600x from my gaming rig to test. 

[hege]

Same in my case. 5900X works perfectly, but 5750G doesn't, even with the iGPU completely disabled, the B50 disappears after a reboot. I am working with ASRock to investigate the BIOS side, and this evidence points at the Cezanne APU/ AGESA and it's interaction with the B50.

[hege]

Looks like intel has been investigating and reproducing this problem in November.

Let's hope a VBIOS fix is in the works!

https://github.com/IGCIT/Intel-GPU-Community-Issue-Tracker-IGCIT/issues/1262

[Cristian_mcv]

I previously had the same issue with my Z170A Gaming M3 motherboard and an Intel Core i7-6700. When I installed the graphics card, the system booted normally, but it would not restart; I had exactly the same problem.

However, something happened during the troubleshooting process while I was trying to fix it, and the issue was resolved. For that reason, I do not believe the problem is related to the Ryzen 5 5500 processor.

I have now purchased a Ryzen 5 5500 and a Gigabyte B550 UD AC motherboard, since my previous board did not support ReBAR, and I am experiencing the same restart issue again. This is the only processor I currently have, so I must find a solution.

If I manage to resolve it, I will let you know. Thank you very much for your observations; they were very helpful.

[KentRusselP_Intel]

Hi Telsauers,

I hope this message finds you well, and thank you for your prompt response. Rest assured that the issue will be investigated. For the meantime, if you have any questions or need further clarification, please don’t hesitate to reach out.

Hi hege, thank you for your insights!

Best Regards,

Kent Russel P.

Intel Customer Support Technician

[Ernesto_C_Intel1]

Hi @telsauers, 

Thank you for reporting this issue. We've identified this as a known problem with the Intel Arc B580 and are actively investigating a solution. I'll update you as soon as we have more information.

Regards, 

Ernesto C. 

Intel Customer Support Engineer

[Fidibikobus]

I'm also having the same Problem.
In my case it's the Intel Arc B570, Ryzen 5 5500 and Gigabyte B550m k.

Best regards,
Fidibikobus

[csplinter]

Then what developments have there been since 1/18/2026? It's three months later and I'm facing the same issue.

[TheDoctor1]

I have the same problem: Ryzen 5500 on Gigabyte B550 gaming X V2 and Asrock Arc B580.
Cold start normal but warm start causes the GPU not to post. 

Tried everything. Only thing that worked is putting the GPU in the 2nd PCIE . 

I know it's not ideal but I really don't want to return the card because it is a good card otherwise and works great.

I am hoping there will be some solution soon.
Otherwise NVIDIA will be getting my business. 

It seems that the idea that this processor is not able to work with this GPU is the problem here due to the card trying to use PCIE 4.0 on warm restart which the CPU does not support.

There must be a solution on the GPU firmware level that someone at intel can come up with.

[Fidibikobus]

I just discovered something new:
The BIOS reset, which has already been discussed here, does not affect all BIOS settings.
I can confirm that CSM is reset to default (enabled).
After saving and exiting, the fans sound as if the PC is in a boot loop. After the fans whir a few times, nothing happens.
Since I cannot save my BIOS without performing a warm boot, I shut down the PC after the first fan whirling.

After the next start, I could see in the BIOS that CSM remained disabled.
Now the Intel software also tells me that ReBar is active.

So it seems like the boot loop or whatever it is causes the reset of CSM. And since it happens after every change of the bios settings, CSM is always enabled. I don't know if I would recommend the shut down just after saving the setting (because of risking a softbrick), but at least it keeps CSM disabled.

[ovel2clock]

Same exact issue with the P50 Pro. 

AM4 Aorus B550M AORUS PRO-P.  The P50 will show up on a cold boot in BIOS and in Proxmox.  Do a warm reboot, it disappears from both BIOS and Proxmox.  A cold boot restores the P50.