If you have tried all drivers and still have no sound, the issue might be hardware-related:
Often listed under PCI\VEN_8086&DEV_3198 . proline v1165c4 sound drivers download
Download and installation steps
The first lesson is that the Proline name is likely a rebadge. Many smaller system integrators purchase barebones laptops from Original Design Manufacturers (ODMs) like Clevo, Compal, or ECS. Consequently, the official Proline support page (if it ever existed) may have been shuttered. Attempting to download "Proline V1165C4 sound drivers" from third-party driver aggregators is risky; these sites often bundle malware or outdated packages. The correct path is to identify the actual audio hardware inside the machine. If you have tried all drivers and still