I'm not sure if this is where I post this message but I'm sure someone can help. I have a Hp DVD840i and when I play a cd or dvd from the drive it choppy sound and video. But every thing works if I Rip or Burn. For the driver it says Driver Date 7/1/2001. I know that can't be it. Where I'm having trouble is finding a firmware update. The One on the HP website won't work, and it's saying is model mismatched, I can't find anything else.