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Choppy DVD playback

Posted on 2006-04-23
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Last Modified: 2010-04-25
I have a HP 512C machine that I have recently upgraded.  It is a 1.7 Ghz machine that now has 768 mb RAM, onboard video.  Every time I play a DVD in a newly installed DVD burner, the video is choppy.  If I minimize the visual part of the DVD playback, the audio comes through smooth.  What are some possible fixes for this problem????

Thanks,
Kendal
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Question by:gvector1
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by:Irwin Santos
ID: 16522687
drop the screen resolution to 1024 x 768
have you updated your video drivers?

latest directx?
http://www.microsoft.com/windows/directx/default.mspx

latest DVD program update?
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Irwin Santos earned 2000 total points
ID: 16522692
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by:Gary Case
ID: 16522806
Sounds like the DVD drive may have reverted to PIO mode transfers.

If so, this will fix it:  (this is a harmless registry edit -- the deleted values will be reset by Windows at next boot)

Load RegEdit (Start - Run - Regedit)

Go to the following keys:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\ Class\{4D36E96A-E325-11CE-BFC1-08002BE10318}\000x

The last four digits will be 0000, 0001, 0002, 0003, and so on.

Under each key, delete all occurences of the following values:

     MasterIdDataChecksum
     SlaveIdDataChecksum

Now reboot your system and see if the problem disappears.


You can check the current transfer mode in Device Manager if you want -- expand your IDE ATA/ATAPI controller line; and for each IDE channel (Primary & Secondary) do a right-click, Properties, and look on the Advanced Settings tab to see what the "Transfer Mode" is set to (should be "DMA if Available") and what the "Current Transfer Mode" is (you can't change it, but you can see what it is).   In any event, I'd do the forced redetect I noted above (the registry modification).
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by:gvector1
ID: 16734679
I'm sorry I lost track of the post.  It was the video driver needing updating.
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by:Irwin Santos
ID: 16734710
Cool. thank you gvector1!
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