Toshiba 8100 User Manual page 263

DVD operating problems–Windows 98 Second Edition
The "Root" or "Title" menu does not open.
Most DVD titles have one or both of the "Root" and "Title"
menus. If one menu button appears to do nothing, try the other
menu button.
DVDExpress performance decreases after making a system
change.
DVD playback performance is dependent upon several system
resources. Changes to these system resources caused, for example,
by installing a new graphics or audio card may impact
performance. Some software changes may also impact playback
performance (for example, downloading new drivers from the
Web).
Before installing a new hardware or software component on your
system, check for any potential conflicts between its resource
requirements and your current system configuration. Also, if you
change your operating system, check with your PC manufacturer
or your graphics card vendor to ensure that you have the
appropriate drivers for both your hardware (for example, the
graphics card) and software (drivers must support the operating
system and DVD with DVDExpress).
Slow playback performance.
DVD playback is a resource intensive application. Other
applications and/or changes to your system hardware, software or
configuration can impact playback performance. If playback is
slower than normal, try the following:
1 Close any other open applications to improve the
performance of the DVD playback.
2 Ensure DMA is turned on. For more information, see "Direct
Memory Access" on page 214.
3 If you have installed new hardware (such as a new graphics
card or audio card), ensure the component's drivers support
Troubleshooting Guide
Part II: Technical Reference
237