I have an Inspiron 6000 on which the hard drive died so I had to replace it and reinstall windows and all the dell drivers.  I downloaded them from the website since I didn't have the disc to reinstall.

 

All seems to be working ok except for trying to play back mpeg file - I get a bunch of blocky looking video.  I have tried a couple of clips and get the same results. 

 

I have the ATI Radeon X300.

 

Please Help.