ATI Technologies ATI Multimedia Center 8.1, P/N 137-70268-20 specifications Suggested solutions

Troubleshooting 123

Suggested solutions

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.

1Click Start, point at Settings, then click Control Panel.

2Double-click System, then click the Performance tab.

3In 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.

1Click Start, click Run, type msconfig, then click OK.

2Click 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.

1Click Start, point at Settings, then click Control Panel.

2Double-click System, then click the Device Manager tab.

3Check 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.