First, to confirm the hardware of the headset mic is not defective, please connect the headset with a smartphone/tablet directly (Without using the splitter cable) and make a call to see if the mic works. (Make sure the mic switch on the cord is ON.)

If the mic doesn’t even work on your phone/tablet, please email us at support@runmus.net and we will provide further help. If the mic works on your phone/tablet, then please follow the directions below.

 

On Desktop

Step 1: Make sure you have connected the 3.5mm headset plug with the splitter cable and plug the red and green plugs respectively to the pink & green jacks of the motherboard (Or mic & audio jacks on the front panel if your PC host has.)

Step 2: Go to Start  Settings  > Privacy  > Microphone.

     Choose your preferred setting for Allow apps to access your microphone.

     Under Choose which apps can access your microphone, turn the individual     

     settings for apps On.

     Please make sure the system and your target app have access to microphone.

Step 3: Please go through the links for troubleshooting: https://helpdeskgeek.com/windows-10/how-to-fix-a-microphone-not-working-on-windows-10/

https://www.howtogeek.com/395296/fix-my-microphone-doesnt-work-on-windows-10/

 

On Laptop

Step 1: Make sure you have plugged the 3.5mm plug into your laptop’s aux port directly and WITHOUT using the splitter cable.

Step 2: Go to Start  > Settings  > Privacy  Microphone.

     Choose your preferred setting for Allow apps to access your microphone.

     Under Choose which apps can access your microphone, turn the individual     

     settings for apps On.

     Please make sure the system and your target app have access to microphone.

Step 3: Please go through the links for troubleshooting: https://helpdeskgeek.com/windows-10/how-to-fix-a-microphone-not-working-on-windows-10/

https://www.howtogeek.com/395296/fix-my-microphone-doesnt-work-on-windows-10/