Check with the PC vendor for sound drivers (if there are no Win 10 drivers listed, Win 8.1 drivers will work).
The Microsoft drivers are only generic, basic function drivers and not full function like the hardware driver. The Fix: I found this fix works in device manager, un-install the OED device, making sure to check the “delete driver” checkbox, then do the same for the “Smart Sound Technology Audio Controller” device above it, also enabling the “delete driver” checkbox. The problem could be you are using the 'Microsoft HD Audio Drivers' instead of the correct sound hardware drivers.
I found that Lenovo System update already had the newer driver for both Realtek and Intel in place, yet interestingly if you try to select a new driver (from hardware list) for the OED device, it offers both a new and older driver. If it shows Off, click Change to turn it back on. Open Control Panel by typing its name in the Windows Search function and selecting the topmost result then navigate to Sound. In Windows 10, go to Allow access to the microphone on this device and make sure the slider is On. This will broadly mean that the mic is now enabled on your PC. usbaudio2.sys fits within the wider architecture of Windows USB Audio as shown. My motherboard is ASUS ROG STRIX z590-e gaming wifi, after I built up my pc I found my headset mic input was really really low, none can hear me, I have to yell to make the bar move in mic test and there was no Microphone boost option in taskbar Sound. However, if a third-party driver exists on the system or Windows Update, that driver will be installed and override the class driver. I have this new build windows 10 pc with really annoying mic input problem. Updated Realtek audio driver v.1 to fix WU issue. Click Change and make sure the Windows 11 Microphone access slider is set to On. The driver is automatically enabled when a compatible device is attached to the system. Update Dolby driver to fix crash issue caused by INVALID_POINTER_READ_c0000005_DolbyAPOvlldp.dll!Unknown. 1 should also update the Intel driver, as seen in the release notes: These Intel devices are part of the Realtek sound package in the laptop, and you can find the updated Realtek driver here, which also includes the newer Intel driver: Turns out there’s a driver issue, and the fix is to update the driver, but sometimes even after updating the driver, it still doesn’t work. This is what they look like when healthy while the problem is occuring, you’ll see an alert symbol next to the line ending with OED Going into Device Manager, I see an exclamation point next to “Intel SST Sound System Technology OED”, yet there’s another Intel SST device above it that looks fine. Here’s a fun one I tackled recently brand new Lenovo T15 laptop, fresh Windows install, but the built-in microphone is missing (in Windows)! Camera is working.