crwdns2934241:0crwdne2934241:0 Eric Essen

crwdns2934249:0crwdne2934249:0:

It handles your audio input/output and processing.

On your laptop, I believe the sound card is built into the logic board.

Depending on your issue, it may be something other then the logic board. For example the microphone cable in step 46

[guide|197] not being seated would cause microphone issues.

crwdns2915684:0crwdne2915684:0:

open