Audio Driver won't install  

Uninstall the "Audio Device On High Definition Audio Bus" in the Device Manager. RIGHT click on that entry to highlight it and then LEFT click "Uninstall". If it asks if you want to also uninstall the drivers, click yes. Then restart the PC and when Windows starts it should detect the sound and install the generic, basic function, High Definition Audio Device driver, assuming there is nothing wrong with the sound hardware and its enabled in the BIOS.

If the Windows installed High Definition Audio Device was installed, check the sound Playback to see if you have audio. If this works OK, you can attempt the Realtek driver install again (if that is the correct sound driver).

The Dolby will not install until the Realtek is first installed.

The device does not show its disabled in your screen shot.

Did you run the troubleshooter? or did that automatically come up?

I see the Wi-Fi is not connected. Make a connection and see if anything changes. Sometimes, when Windows is installing a driver, it needs to access an on-line data base to get the driver or items needed.

According to what I see, this is an Intel CPU system. Reinstalling the Intel Motherboard Chipset drivers may also help the problems.

Yes, reinstall the Intel motherboard chipset drivers.

What you mark is not the motherboard chipset drivers.

The chipset drivers identify all the devices on or attached to the motherboard and the reason I suggested installing them. If the sound was not identified or improperly identified then it would not install or install properly.

Its listed as "Chipset Intel Chipset Driver" on the Acer downloads.
Download Drivers and Manuals | Acer Official Site