believe it or not joe, you can use the following driver packs from HP based on your hardware ID:
sp65023.exe (v6.10.6491.0)
sp65946.exe (v6.10.6496.0)
sp71717.exe (v6.10.6504.0) - this one is fully Win10 compatible
unfortunately, none of these drivers enable the Dolby Pro Logic & DTS options; on the other hand, I think the latest version will show some DTS support but it's a different DTS option (an unrelated one) altogether. And I found out that Dolby Pro Logic II is from the 2nd generation Dolby (aka. "Dolby Spruce") found in really old drivers (I think the IDT drivers from late 2009 or sometime in 2010) and the updated drivers may or may not have them anymore due to IDT changing the control panel UI in new drivers. Plus Dolby ProLogic II requires an actual 5.1 speaker sound system connected to the proper audio ports and doesn't work or is not available when connecting plain 2.0/2.1 stereo speakers. so maybe I was right the first time.
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