Asus chromebook C436FA: Audio and Fingerprint is missing #1700

Hello champs!

I flashed my BIOS using Mrchromebook firmware to bypass the lock by the org and access the dev mode. Now, I installed the Brunch with chrome OS build 106. everything works perfect. except that I cannot have my audio working when playing YouTube or any media. Second issue is that I don’t see any tab or option mentioned for the fingerprints under the section “Security & Privacy” Screen lock options availavle are: Password and PIN only. Any idea how to make the fingerprint available on this build?

These are my 2 main issues, if you guys happen to have some solutions, I will be grateful:)

I tried to install windows, it shows blue screen with error ACPI_ERROR_BIOS. Any idea?

Thank you!