DVD drive problem

[Guest Mel]

Have a problem with playing movies on my DVD drive--Plays to 7.5 Min and the

picture remains stationary but audio continues to run through the rest of

the disk without hesitation.

System is as follows

MB MSI MS 6380 E

Windows XP Home---NTFS sp2

HD 120 GB

Mem 768 +-

play back using either Windows player or Fusion soft--Both exhibit the same

problem

Started with a Sony DRU-800A drive--Installed a new Sony DRU-840A

drive --same problem

I have a second desktop identical to this one and the disks play without

problems--Also 2 laptops play any disk without hesitation.

Really at a loss and would appreciate any advice one or more can offer--Many

thanks --Mel