I have this same mobo(ASRock A320M-HDV R4.0 AM4) and this same ram(Corsair Vengeance LPX 8GB DDR4 3000Mhz ).
By default the mobo config the ram to 2133 MHz, I change this to 3000MHz at XMP profile.
Work nice until I run Bluestacks(Android Emulator). And begin an emulate Free Fire(Battle Royale).
The pc crash and go to Blue screen of the dead.
According to my mobo site, this RAM doesn't have support in this mobo.
Have I any hope?