Hello,
Try to edit the file /etc/modprobe.d/alsa-base.conf or create it and add the following lines:
options snd-hda-intel dmic_detect=0
options snd-hda-intel model=laptop-amic enable=yes
The first line is to enable the speaker, the second for the internal microphone.
For that you might have to consult this
https://wiki.archlinux.org/index.php/Advanced_Linux_Sound_Architecture#ALSA_Firmware
Not sure what you did after installing is the proper way …