[coreboot] I NEED HELP

[Nez Civil]

Hi
I have an Acer aio device that has a BIOS type COREBOOT version 4.9
acer chromebace CA5W1
Chrome OS is installed by default, now I have installed the Windows operating system from the BIOS, but the sound card driver is not installed, and also to enter Windows, you must first enter the BIOS and enter Windows from the BIOS
I wanted to ask, is there a way to solve the sound card problem?
And entered Windows directly without the BIOS
Photo of the device specifications and stickers on the back of the device are attached. 
Thank you for your guidance