|Any device that's built into the mboard IS NOT A CARD !|
The sound adapters on mboards vary regarding the impedence (the AC equivalent to DC resistance) of headhones or microphones that work best with them. However, it is often difficult to find out what the ideal range of impedences are for the sound chipset. You may need to use earbuds with a higher or a lower impedence.
Sometimes there is a setting in the Sound settings in Windows where you can choose to boost the volume.
See Response 6 in this
" Make sure you don't have volumes set too low or muted, for things you want to hear or use.... "
Note that the sound is Muted if the blue speaker icon has a red circle icon with a diagonal bar.
If there is such a setting it will be in those sound settings somewhere.
Also, if this is a desktop computer, there may be a separate sound level setting for the front headphones and mic ports on the case, if that's where you have the earbuds plugged in.