Do you have the model number of the PC?
With this it will be possible to find out if it's onboard sound or a sound card.
You could download this it a system info program and it should tell what motherboard you have
Surface Pro (2017) vs Surface Pro 4
20 groundbreaking 3D animation techniques
How to mine Bitcoin on Mac
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.