Why is the sound very quiet in the headphones?

Question

Headphones

Hello.
Once I had a problem and I can not solve it for a long time.
My computer has headphone jacks on the front and back.
There is almost no sound in the front, but there is in the back.
The microphone only worked when turned on in the front.
What?

Answer 1

It is possible that the cable connecting the audio jacks of the case and the motherboard does not fit well.