Troubleshooting: Microphone No Sound

　　When video calling or singing via PC, a silent mic is frustrating. Solutions below.
　　Method 1:
　　Test mic on another device. If still silent, suspect hardware failure. Check connections/jacks for looseness. Then: Sound Control Panel → Recording → Ensure "Microphone" is enabled.
　　Method 2:
　　Sound Control Panel → Recording → Microphone → Properties → Levels → Verify mic volume isn't muted.
　　Method 3:
　　Control Panel → Add Hardware → "No, I haven't added this hardware" → Finish. Restart PC.
　　Method 4:
　　Control Panel → Speech Recognition → Microphone Setup → Set first mic as default.
　　Method 5:
　　Volume Settings → Options → Properties → Select "Realtek HD Audio Input" → Enable all inputs → Check "Microphone" volume.
　　Method 6:
　　Enter BIOS (DEL key) → Advanced → Chipset → South Bridge Configuration → Front Panel Select → Change from "HD Audio" to "AC97" → Save (F10) → Restart.
　　Method 7:
　　Sound Control Panel → Playback → Speakers → Advanced → Set default format to "Stereo Headphones".
　　Method 8:
　　If all fail: Reinstall sound drivers or scan for malware. Seek remote tech support if needed.