I am running Windows 7 in my Dell Studio 1555 Laptop. I have ATI Mobility Radeon HD 4570 graphics card inside. When I try to watch a video, I can see only some disturbed texture (dark pink grains spread the whole window). I can hear the audio and no prob with that. The I can see the video frames peeking sometimes but is pretty slower.
I have DirectX (directx_Jun2010_redist) and Win7 codecs installed.
Here are some screenshots;



The video details are;
Name: video.mp4
Frame width: 1920
Frame height: 1080
Frame rate: 29 fps
data Rate: 7958 kbps
Total bitrate: 8052 kbps
Just comment if you want more info.