Microsoft KB Archive/120749

= Mitsumi CD-ROM Disrupts Video/Audio Playback =

Article ID: 120749

Article Last Modified on 10/31/2006

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APPLIES TO


 * Microsoft Windows NT Workstation 3.5
 * Microsoft Windows NT Server 3.5

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This article was previously published under Q120749



3.50

WINDOWS

kb3rdparty



SYMPTOMS
A Windows NT Workstation or Server computer with a Mitsumi CD-ROM exhibits disruptions in video playback: images stop moving, sounds repeat or have gaps. Files can still be read from the drive as normal.



CAUSE
The Mitsumi CD-ROM driver spends up to a third of a second at the DPC level, where it has complete control of the computer and locks out all other programs. This freezes video and fragments audio. When sounds clips are playing and the hardware does not receive the data for the next part of the clip, the system can neither complete nor stop the sound, so the drive just repeats the last data it received.



STATUS
Microsoft is researching this problem and will post new information in the Microsoft Knowledge Base as it becomes available.

The CD-ROM mentioned here is manufactured by Mitsumi, a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding this product's performance or reliability.

Additional query words: prodnt

Keywords: KB120749

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