Hi, enter the Brand and model in Google and add + adio driver at the end, the you can download it, the other option is to go to www.intel.com go to the drivers and support tab enter the model and download it there. When the download promps click run, when done, reboot. the=is should solve it. Just ensure that your volume is set up ( via the audio tab on the system) and your speakers are connected to th green plug on the pc.

Let me know if you still have trouble.

Regards.