Minimum configuration
To play 720/24p video with stereo sound:
Windows XP
Windows Media Player 9 Series
2.4 GHz Pentium 4 processor or equivalent
384 MB of RAM
64 MB video card
1024×768 screen resolution (4:3 content) or 1280×720 (16:9 content)
16-bit sound card
Without meeting the minimum CPU...