8.65.45.3 , 8.63.45.0 , 8.58.38.0 (signed in 2019–2020, predating Windows 11 requirements).
Synaptics HD Audio Driver ( synthdaudio.sys ) Common Hardware: HP laptops using Synaptics-based audio codecs (often paired with Realtek or Intel Display Audio) Primary Symptoms: No audio output, microphone not detected, crackling sound, or “Device cannot start” (Error 10 / 38) after Windows 11 upgrade or clean install. synaptics hd audio driver windows 11 hp
On modern HP laptops, "Synaptics" is the brand of the Audio Port (the physical headphone jack), but the actual sound processor is usually manufactured by Realtek . Therefore, installing the correct driver usually involves a combined "Realtek High Definition Audio" driver that includes Synaptics components. Therefore, installing the correct driver usually involves a
Synaptics HD Audio is not as common as Realtek, but appears in HP laptops as an audio processing object (APO) or DSP for: 8.58.38.0 (signed in 2019–2020
Get-WmiObject Win32_PnPSignedDriver | Where-Object $_.DeviceName -like "*Synaptics*"
: Expand the "Driver-Audio" category and look for the "Synaptics High-Definition (HD) Audio Driver".
If the automatic installer doesn't start, navigate to the extraction folder (often C:\SWSETUP\spXXXXX ) and run .