1.Please double-check whether the "HD Audio” is correctly plugged into the corresponding interface of the motherboard. Normally, it is located at the lower-left corner of the motherboard, and different motherboards manufacturers label it with different names.
2.Please double-check whether the mic and earphones are correctly plugged into the front audio port of the case. Do not mix the position up.
3.Please double-check whether the mic and earphones work well. (You may test the mic and earphone via the rear audio port of the motherboard)
4.Please double-check or update the audio driver.
If you tried all the above steps, your issue is still existing. we recommend you replace I/O PCB to fix this problem.