Sound stops working Video choppy itunes 12.3 windows 10

I'm also having a similar problem, I updated from a windows 7 to a windows 10, except not only will my sound go out, but my iTunes movies will go all blocky and pixelate:

If I simply stop and restart the movie, it will just show green:

I got a 16 GB ram, a Geforce GTX 970, 64 bit system. I am able to play World of Warcraft, StarCraft 2, Diablo 3, Skyrim, Left 4 Dead 1 & 2, all perfectly well. I am still able to play music on my ITunes. it's just when I try to play a movie, what I described above happens. I update all my drivers, I check for updates on a weekly basis and this is still happening. I ran virus scans, malware scans, nothing showed up. As mentioned I did update from a Windows 7 to a Windows 10. my ITunes movies ran fine on Windows 7, but since upgrading to Windows 10, See the pictures above. And yes these are purchased movies I got off ITunes, but if they are movies that I copied onto my computer myself, they run fine. So I am asking please try to fix this!