I upgraded my PC to build 2004. I found my realtek audio is not working at all. HDMI audio was working. But my speakers were not working. I reverted to my old build 1909 and audio started working. Is there any bug in build 2004? When will that get resolved?
If it is a desktop PC, then you may be able to reinstall the drivers from the CD that comes with the motherboard. Note that, on installation, Windows 10 will use a default "High Definition" device driver for your hardware. It will NOT load the Realtek software. Since it is a generic driver, many of the Realtek features will be lost. If you don't have a CD, you MAY be able to download a driver from one of the many sites, but beware of some sites, even those calling themselves realtekxxx are not actually Realtek sites. If someone has better information on where is the best site to download from, I would be grateful if they would post that info here. Namaste.