This is why I disable Microsoft's driver updates.
I have last year's model Acer Predator and comparing your device manager to mine you have a newer chipset. That is, this is under warranty so if we fail to fix it, I'd talk to Acer.
Hello all, I've had this machine about 2 months and has worked flawlessly until tonight. The on board integrated sound card has stopped working. Device Manager shows a little yellow triangle. I've tried uninstalling and reinstalling. Also installing Realtek drivers from ACER driver download section. Still got the problem - no sound. When I uninstall the driver there is no checkbox to tick to completely uninstall it. I've also done a 'Keep my files' Windows restore but the problem still persists. Cheers.