I've installed 13.10 on an old HP dc7100, which uses the Intel 915G x86/MMX/SSE2 graphics chipset and driver. When I play a video the screen freezes after a couple of minutes and the pc doesn't respond to the mouse or keyboard. It doesn't seem to make any difference if I use another video player or a different video file type. For a few seconds after the freeze the audio sounds like a skipping record before it too ceases. Any ideas? Is there anything in the hardware setup I need to change for Linux? I did notice that there was a message from the bios about having to make changes for Unix when I swapped the hard disk. Obviously it didn't say what changes... that would be too helpful.