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Troubleshooting 123
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Close other programs. If a DVD movie is jumpy or drops frames, other
tasks may be causing the problem. Many programs display an icon on the
Windows taskbar. Right-click the icon, then click Exit or Close.
Ensure that a current version of DirectX is installed. Very generally,
DirectX is an interface between applications and games and the drivers
that run your graphics, sound and other hardware. PC Check tests DirectX
(see To access PC Check on page 6.)
(Windows 9x) Ensure that the Hardware Acceleration slider is set at Full.
1 Click Start, point at Settings, then click Control Panel.
2 Double-click System, then click the Performance tab.
3 In Advanced settings, click the Graphics... button, and ensure that the
Hardware acceleration slider is set to Full.
(Windows 9x) Use MSCONFIG to ensure that UDF (Universal Disk
Format) is enabled. Microsoft DVD playback software requires that UDF
be mounted on DVD disks.
1 Click Start, click Run, type msconfig, then click OK.
2 Click the Advanced... Button, then Un-check Disable UDF file system.
Check the Performance page of System Properties to see if you are using
DOS compatibility mode. If your file system is forced to run DOS
Compatibility mode, CD/DVD-ROM drives are not supported, and will not
appear in Device Manager.
1 Click Start, point at Settings, then click Control Panel.
2 Double-click System, then click the Device Manager tab.
3 Check Device Manager to ensure that your DVD-ROM drive is available
in Windows.
Make sure that the protected-mode driver is not damaged. For all ESDI
and IDE drives, Windows uses ESDI_506.PDR in the IOSUBSYS directory
to provide 32-bit disk access.
For SCSI controllers, Windows uses SCSIPORT.PDR and a “mini-port”
(.MPD) driver to provide 32-bit access.
Manually extract ESDI_506.PDR or SCSIPORT.PDR files from the
Windows disks or CD-ROM, or run Setup, and select the Verify option.