Windows 11 24H2: Fix for Synaptics audio issue on HP Prodesk 600 G4

[German]If you own a business PC HP Prodesk 600 G4 with Windows 11 23H2, you could run into problems when upgrading to Windows 11 24H2. The sound from the Synaptics audio unit is missing after the upgrade because the driver provided by HP causes problems. However, blog reader Markus Grosche sent me a workaround by e-mail and in the discussion area, with which you can "get sound again" (thanks for that).

The HP Prodesk 600 G4

The HP Prodesk 600 G4 is a business PC, still offered as "refurbished" with various features by used equipment manufacturers. The device can be purchased with various Intel iCore CPUs, RAM, SSD and with Windows 10 Pro or even Windows 11.

German blog reader Markus Grosche writes that he owns an HP Prodesk 600 G4 with Core i5 8500. I deduce from various offers and this article that this business PC will be delivered with Windows 10 (Home or Pro) before or around 2020. Dealers will then upgrade it to Windows 11 when reselling it.

Synaptics audio issues in Windows 11 24H2

The blog reader wrote that the HP Prodesk models with Synaptics audio are widely available, as they are offered on the second-hand market by refurbished vendors for little money. But the model tends to cause audio problems.

After Markus Grosche updated his HP Prodesk 600 G4 (with Core i5 8500) from Windows 11 23H2 to Windows 11 24H2, the audio output was missing ("the sound was permanently gone").

HP currently only offers the driver 8.65.319.200 Rev. A on its product page as "current". According to Markus, the HP audio controls were already not working properly under Windows 11 23H2 (the service started with a delay of several minutes or not at all).