Directly install Realtek* High Definition Audio Driver from the link below.
It will automatically uninstall your drivers and install new ones.
This one worked for me after nearly trying for 2 days straight https://www.intel.com/content/www/us/en/download/19455/realtek-high-definition-audio-driver-for-windows-10-64-bit-for-intel-nuc-kits-mini-pcs-nuc6cay.html