So 5-6 hours ago, I bought an HD CD of Real Steel. I played it here in this computer and watched it but sometimes Media Player Classic is lagging and the sound is not following the video. Is it because the movie is too HD for my computer to handle it?

My system specs:

I use a small laptop/netbook with a 1.6 GHz Intel Atom processor in it and a 1GB of RAM.

I apologize for the small info but I need help because when sometimes I play an HD video here in my computer using Media Player Classic, the video kept lagging and the sound is not following the video well.

Thanks.

Hit Windows+r and type in dxdiag. Click on Display and look at Approx. total memory. If it's below 90mb, I have found your problem, and you could try updating your graphics adapter drivers via the device manager.

If the video is simply lagging behind the audio, try downloading VLC and tweaking the audio offset to synchronize it with the video. It's a free media player and generally works better than WMP in my experience.