Audio ahead of video in iTunes using Windows 8

Question

I recently bought a new HP ENVY m4 laptop with Windows 8 at Best Buy. I do not like Windows 8, I prefer Windows 7, but there was nothing I could do about it. After I bought my new laptop, I downloaded iTunes along with everything I have ever bought on iTunes. A few days ago I bought and downloaded the movie "Oblivion", the new Olga Kurylenko movie. I bought the Hi Def version of the movie to be specific. Every time I've tried watching it, about half way through the movie, the audio gets ahead of the video. I have to constantly pause then play the movie, to keep the audio inline with the video. This has also happened with some of the other movies and series I have, that are in Hi Def as well. The movies and series that I have in the "Standard/ Non-Hi Def" versions play just fine, with no problems. I was just wondering if anyone else has ever had this problem, not just with the same laptop I have, but with any other laptop or computer (Be it a Mac or PC). And if you have had or still have this problem, how can you fix this problem? It's starting to really bug me. As for my laptop; it's an HP ENVY m4-1115dx Notebook with Windows 8 64bit OS, an Intel 3rd generation Core i7-3632QM Processor @ 2.20GHz 2.20GHz with Turbo Boost Technology up to 3.2GHz, it has 8GB DDR3 SDRAM (2 DIMM) RAM, a 1TB 5400RPM hard drive, Intel HD graphics 4000 with up to 1664MB total graphics memory, with the Beats Audio, with a whole other bunch of goodies. I've talked to my local Best Buy "Geek Squad" and they've told me that there shouldn't be a problem with the audio getting ahead of the video, or even the other way around, because my laptop is set up to accommodate and handle Hi Def movies, thus the Intel 4000 HD graphics card, and also because my graphics card is a Hi Def graphics and audio card (But I don't really believe my graphics card is also an audio card, but I could be wrong). Now, I am no computer wiz or anything like that. I just watch and download movies, listen to and download music (I only download iTunes movies and music, I've learned the hard way not to download music and movies on P2P sites like Limewire and Torrent sites), surf the internet, email, and do work stuff, and stuff like that. I have some what good knowledge of computers and how they work, but like I said I am no computer wiz. So if anyone has any advice or help, I would really appreciate it. Sorry about the novel, I didn't mean to get so in depth with everything. Thanks again for any help.

Answer 1

I could never tell if it was out of sync in the video preview on my lap top because it was so jerky.
So the only way for me to ensure that it was in sync was to write it out to a DVD disk and then view the content on a TV.
(I know that it automatically transcoded it to be standard def instead of hi def)
And after doing that, I did not see any sync issues.
I know this method is too time consuming, which is why I build a desk top PC so I could do real time previews while editing.
I will try to write it out to a Blu Ray disk both from my laptop and from my new desktop PC to see if they both have audio sync issues.
This is very confounding.
I have also ordered a 6 pin to 4 pin 1394 cable (since my Canon XHA1 has 4 pin iLink firewire and my desktop pc has 6 pin) so that I can try to recapture to see if that is the issue.