Toshiba PPM78U05L01E User Manual

Page of 258
8-8
User’s Manual
PORTÉGÉ M780
Internal display panel
Apparent computer’s display panel problems may be related to the 
computer’s setup and configuration - please refer to Chapter 7, 
for further information.
Problem
Procedure
No display
Press the FN + F5 hot keys to adjust the display priority, 
and to make sure it is not set for output to an external 
monitor.
Markings 
appear on the 
computer’s 
display panel.
These marks may have come from contact with the 
keyboard and Touch Pad while the display panel has 
been closed. You should try to remove the marks by 
gently wiping the display panel with a clean dry cloth or, 
if this fails, with a good quality LCD screen cleaner. In 
this latter instance you should always follow the 
instructions with the screen cleaner and always ensure 
you let the display panel dry properly before closing it.
Problems 
above remain 
unresolved or 
other 
problems 
occur
You should initially refer to the documentation supplied 
with you software to determine if it is this that is causing 
the problems. Alternatively you may wish to run the 
TOSHIBA PC Diagnostic Tool to check the general 
operation of the computer.
If you are still unable to resolve the problem, contact 
your reseller, dealer or service provider.
Display Power Saving Technology:
Your model may include the Display Power Saving Technology feature that 
can save the computer’s power consumption by optimizing picture contrast 
on the internal LCD. This feature can be used if the computer is:
configured with Mobile Intel
®
 HM55 Express Chipset model in graphic 
chip by Intel
®
, or Mobile Intel
®
 QM57 Express Chipset model in graphic 
chip by Intel
®
*
running under battery mode
using the internal LCD display only
The power and performance settings can be adjusted in the Intel
®
 
Graphics and Media Control Panel.
To access this control panel, go to
Control Panel -> Appearance and Personalizaion -> Display -> 
Change display settings 
-> Advanced settings -> Intel
®
 Graphics and 
Media Control Panel -> Graphics Properties -> Power -> Power 
Features 
-> Graphics Power Plan Settings -> select On battery -> 
Display Power Saving Technology
If you want to improve the picture quality under the conditions mentioned 
above, adjust the setting towards Maximum Quality or disable this feature.
*Please visit your region’s web site or refer to the catalog for the 
configuration details of the model that you have purchased.