Dell Inspiron 13 5368. Recently had the laptop SSD die, so installed new SSD, then clean install of Windows 10 and reloaded all drivers from Dell support page. Laptop all working now except speakers do not work (headphone audio OK).
Reloaded latest Realtek driver multiple times with no success. Showing current audio driver as 220.127.116.1124. Have been through all the standard troubleshooting and fixes recommended on Dell site and Google. Unlikely that I damaged both internal laptop speakers during SSD install.
Had same problem previously when I upgraded from Windows 8 to Windows 10, and fought with it for an extended period of time. Eventually got speakers working but don't remember exactly how.
I also tried all the old versions of Realtek drivers.
Audio tones are not heard through speakers when color bars show during (F12 start) diagnostics.