Feb 27, 2018 - Acer Realtek Audio Driver v5.10.0.5257 AD2008 audio beta driver version 6. For Windows 7. ADI Audio Driver ADI Audio codec AD1988A for. Free Download HP ADI HD Audio Driver 5.10.1.5880 Rev.B for 2K/XP (Sound Card). The Microsoft UAA driver provides the necessary support for the HD audio bus used by the ADI HD audio CODEC. Users who are upgrading to this newer driver on an existing system, should ensure that the UAA driver is already installed on your system.

I updated From WIndows 7 to Windows 10 in March; on board sound system worked fine at that point. Since one of the updates this summer (July 12, I think, though it could have been later), the internal speakers do not work; the computer does not recognize the presence of internal speakers (only external speakers and microphone). I have tried using Device Manager to update drivers: sound and audio controllers--HD Audio device--runs the update and says my drivers are up to date (but only registers the external speakers). I have tried searching the HP site for the driver compatible with my setup--no luck.

Can you either help me get to the driver link or suggest another solution? Is it possible to recover and use (e.g.) the driver that I had for Windows 7? Or another earlier operating system?