Solve PC Sound-Audio-Microphone Issues
No Sound
- Click speaker in bottom-right system tray, increase volume by dragging needle & you should hear a ding:
or 
- No audible ding? Check physical speaker volume nob:
- Dell round ones have a dial on the top (usually left), right/clockwise will increase the volume
- Headphones may have a volume dial on the wire
- Try bottom-right speaker volume again. If you get a ding, but app/website still isn’t working you’ll need to look for a speaker there to unmute or increase volume
- Hovering over video on website usually shows a speaker & volume on bottom
- No audible ding? After you click speaker in bottom-right if you see an arrow after the text click it & change to anything that doesn’t say Intel, Display, GFX, or Graphics
or 
- If using speakers not built-in follow the wires from the speaker to confirm it goes to the green jack on the PC tower. Confirm the other wire (likely power) is connected as well
- All else fails, try a restart. Automatic updates on PC's now include things like sound that require a reboot, but don't also tell you
Microphone isn't working
- Right-click speaker in bottom-right by date/time, click 'Sound settings':

- Scroll down to Input (in the System>Sound settings window that opens up). Click the arrow next to the microphone you would like to use:
Note: Realtek is usually microphone inside laptop, otherwise you'll see the brand name of your corded webcam or headset in here

- Input volume will show a moving thicker bar as you talk if the microphone is working. You can also Start test

- All else fails, restart your PC. Automatic updates on PC's now include things like sound that require a reboot, but don't also tell you. You can trigger these updates with steps in this article: Update Windows Computer OS & Software
Microphone blue bar shows its working, but doesn't work in my app/program
Windows 10 methods
Microphone isn't working
- Right-click speaker in bottom-right by date/time, click 'Open Sound settings'

- Input section, 'Test your microphone' will show a blue bar as you talk if the microphone is working

- Most laptops have built-in microphones & many webcams do now as well however its possible your PC may not have a microphone
- Input allows you to change your microphone (i.e. 'input device')
- If you shut your laptop lid its best to have a corded webcam & select that microphone (brand). If you don't have corded webcam keep your laptop lid open for best microphone sound
- All else fails, try a restart. Automatic updates on PC's now include things like sound that require a reboot, but don't also tell you
Related Articles
References
- https://support.microsoft.com/en-us/windows/how-to-set-up-and-test-microphones-in-windows-ba9a4aab-35d1-12ee-5835-cccac7ee87a4
- https://support.microsoft.com/en-us/windows/fix-microphone-problems-5f230348-106d-bfa4-1db5-336f35576011
- https://support.microsoft.com/en-us/windows/fix-sound-or-audio-problems-in-windows-73025246-b61c-40fb-671a-2535c7cd56c8