I just installed Win 10 in the other computer, it had 8.1 in it and hal worked fine. One of the first things I did was check Hal, I'm using one of the full bod fleshy characters and there is some kind of twitching, very noticeable, similar to what I ran into in win 7 or vista with the audio problems. Seems the other characters will work okay. This is not a preview it is the free win 10 upgrade.
Carl2