For an Acer A515-57 on Windows 11, use this order:
- Check microphone privacy access:
- Go to Start > Settings > Privacy & security > Microphone.
- Turn on Microphone access.
- Turn on Let apps access your microphone.
- Turn on Let desktop apps access your microphone.
- Check whether Windows can see any input device:
- Go to Start > Settings > System > Sound.
- Under Input, check Choose a device for speaking or recording.
- If the built-in mic appears, select it and run Start test under Microphone test.
- In Device Manager, check for audio device problems:
- Right-click Start > Device Manager.
- Expand Sound, video and game controllers.
- Also check System devices for Intel Smart Sound Technology OED.
- If Intel Smart Sound Technology OED shows a warning icon or Code 43, install the audio driver package for the exact Acer A515-57 submodel from Acer.
- If Windows is not detecting the microphone at all, reinstall the audio drivers:
- In Device Manager, expand Sound, video and game controllers.
- Right-click each audio device and select Uninstall device.
- Select the checkbox to remove the driver, then uninstall.
- Restart the PC.
- After restart, if needed, go back to Device Manager, right-click Sound, video and game controllers, and select Scan for hardware changes.
- Then right-click the audio driver and select Update driver.
- Check Windows driver updates:
- Go to Settings > Windows Update > Advanced options > Optional updates.
- Install available driver updates and restart.
- If the microphone still does not appear, install Acer-provided drivers for this model:
- Install the latest audio driver for the exact A515-57 variant.
- If available from Acer, also install the related chipset driver, since similar Acer cases were resolved after installing chipset and audio drivers.
- If the device was previously working and stopped after a recent driver change, a newer driver may be causing the issue. In a similar A515-57 case, the built-in mic started working again after the newer microphone-related driver was force-uninstalled so the older working version was used.
If the built-in microphone still is not detected after these steps, the remaining likely cause is a hardware connection or device-specific driver issue.