No audio output Sypnaptics HD audio - integrated speaker

[Coraline2025]

For about 3 month now, my EliteOne integrated speaker and AUX input is unable to play any sound.

Have have check several time the following : 

• Make sure the audio output was correctly using "Synaptics HD audio" as a device for the application I wish the audio to work (exemple Chrome).; 
• I have use other AUX device to make sure it was not a material issue; 
• Try to update the driver via Computer Management, which is telling me that the driver, 8.65.317.104 (French) form 7/4/2021 is the last and best driver for my material;
• I have try to check if it was a conflict with BT - deactivating the card, but wasn't the case. (By the way BT work fine, I can use BT audio material to have sound and microphone.)

It is very frustrating. I try to use the "sound troubleshooting" in integrated HP Support Assistant, which bring me to a AI agent to ask me to restart my computer...which doesn't solve the problem...Than they ask me to follow some step in the HP Support Assistant which ask me to install something not compatible with my computer OR if I try to follow the step back into HP support Assistance, juste and up in a endless loop into the AI assistant. Basically, useless. 

I would like to be able to fix that issue once and for all.

Here a part of DxDialog

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System Information
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Time of this report: 3/6/2025, 09:20:29

Operating System: Windows 11 Affaires 64-bit (10.0, Build 26100) (26100.ge_release.240331-1435)
Language: French (Regional Setting: French)
System Manufacturer: HP
System Model: HP EliteOne 800 G4 23.8-in Touch AiO
BIOS: Q11 Ver. 02.25.00 (type: UEFI)
Processor: Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz (12 CPUs), ~3.2GHz
Memory: 24576MB RAM
Available OS Memory: 24350MB RAM
Page File: 13163MB used, 12722MB available
Windows Dir: C:\WINDOWS
DirectX Version: DirectX 12
DX Setup Parameters: Not found
User DPI Setting: 96 DPI (100 percent)
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
Miracast: Available, with HDCP
Microsoft Graphics Hybrid: Not Supported
DirectX Database Version: 1.6.7
Auto Super Res Version: Unknown
System Mux Support: Mux Support Inactive - Ok
Mux Target GPU: dGPU
Mux Incompatible List:
DxDiag Version: 10.00.26100.3323 64bit Unicode

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Sound Devices
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Description: Haut-parleur (Synaptics HD Audio)
Default Sound Playback: Yes
Default Voice Playback: Yes
Hardware ID: HDAUDIO\FUNC_01&VEN_14F1&DEV_51D7&SUBSYS_103C83E4&REV_1000
Manufacturer ID: N/A
Product ID: N/A
Type: N/A
Driver Name: CHDRT64.sys
Driver Version: 8.65.317.104 (French)
Driver Attributes: Final Retail
WHQL Logo'd: Yes
Date and Size: 04-07-21 19:00:00, 3837296 bytes
Other Files:
Driver Provider: Synaptics
HW Accel Level: Emulation Only
Cap Flags: 0xF1F
Min/Max Sample Rate: 100, 200000
Static/Strm HW Mix Bufs: 1, 0
Static/Strm HW 3D Bufs: 0, 0
HW Memory: 0
Voice Management: No
EAX(tm) 2.0 Listen/Src: No, No
I3DL2(tm) Listen/Src: No, No
Sensaura(tm) ZoomFX(tm): No

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Sound Capture Devices
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Description: Microphone interne (Synaptics HD Audio)
Default Sound Capture: Yes
Default Voice Capture: Yes
Driver Name: CHDRT64.sys
Driver Version: 8.65.317.104 (French)
Driver Attributes: Final Retail
Date and Size: 04-07-21 19:00:00, 3837296 bytes
Cap Flags: 0x1
Format Flags: 0xFFFFF