DVD's do not play correctly, receive sound but video is ch..

Archived from groups: microsoft.public.windowsxp.video (More info?)

On Sun, 9 Jan 2005 04:23:02 -0800, mgoodchild00
<mgoodchild00@discussions.microsoft.com> wrote:

>I have recently tried to play a dvd on my laptop. have tried media player,
>real player and power dvd. The dvd plays, the sound quality is fine, but the
>picture skips. it is impossible to watch a movie like this. it has happened
>on a few occasions and i cant remember how i fixed it. Any suggestions would
>be good.
Try turning off hardware acceleration on video card.

Archived from groups: microsoft.public.windowsxp.video (More info?)

mgoodchild00 wrote:
> i have recently found the problem. There is a fault in newer versions of
> Windows. The IDE channels should be set at DMA if available. Windows will
> quite simply change this without warning. When u attempt to change this back
> to DMA from PIO, it appears to have been done, but it still hasnt. so u will
> need to uninstall the IDE channels and then reboot your computer. depending
> on what version of windows you have, when rebooted the OS should pick up and
> install the channels back and your problem will be sorted.

But you'll have the problem again, because XP doesn't reset the transfer
mode just to p*ss you off. It happens because of read errors. XP will
incrementally step back the transfer mode until it finally says the hell
with it and switches out of DMA altogether.