USB-C External Monitor Not Detected After Boot

[Ogaaness]

Hello HP Support Team,

I am experiencing an ongoing issue with my HP Victus 15 laptop (SKU: BV8X8EA) related to an external monitor connected via USB-C.

System details:

• Model: HP Victus 15 (15-fb3000 series)
• CPU: AMD Ryzen AI 7 350 with Radeon 860M Graphics
• OS: Windows 11
• Connection: USB-C (DisplayPort Alt Mode) to external monitor

Problem description:

The external monitor is not consistently detected when the laptop starts.

Observed behavior:

• When I power on the laptop, the monitor initially detects a signal (indicator turns white).
• During Windows boot, the signal is lost (indicator turns yellow).
• After Windows fully loads, the monitor is not detected at all (not even in Device Manager).

Important observations:

• The issue is intermittent:
  • Sometimes the monitor works normally for several days.
  • Then suddenly stops being detected after boot.
• Temporary fixes:
  • Entering BIOS and exiting without changes restores functionality.
  • Performing a power reset (holding power button ~20–30 seconds) also restores functionality.
• This strongly suggests a USB-C / display initialization issue rather than hardware failure.

Driver-related findings:

• The issue became worse after AMD graphics driver updated to:
  • Version: 32.0.23033.1002
• Rolling back to an older version:
  • Version: 32.0.13058.3002
    improves stability, but does not fully resolve the issue.

Additional steps already taken:

• Updated chipset drivers (AMD Chipset)
• Verified BIOS is up to date (HP Support Assistant shows no updates)
• Disabled Fast Startup
• Tested different boot scenarios (cold boot, restart, reconnecting cable)
• Issue persists regardless

Conclusion:

The problem appears to be related to:

• USB-C / DisplayPort Alt Mode initialization
• Interaction between BIOS and AMD graphics driver during Windows boot

Request:

Could you please advise:

1. Is this a known issue with this model or configuration?
2. Are there any BIOS updates planned to address USB-C display initialization?
3. Are there recommended drivers (specific versions) for stable USB-C display output?
   
4. Is there any firmware or setting that can improve USB-C stability?
5. How to resolve this problem?
   

The monitor: Lenovo Legion 27Q-10 (68C6GAC4UA)
The cabel: Ugreen CM556 USB-C - DisplayPort v1.4 2

Thank you in advance for your assistance.