Toshiba l450-sp2918 Reference Guide

Page of 56
51
If something goes wrong
5.375 x 8.375 ver 3.1
If you are using an AC adaptor, verify that the computer is receiving 
power from the external power source by looking at the AC power 
light. If the indicator is glowing, the computer is connected to a live 
external power source.
The computer starts but when you press a key nothing 
happens. 
Verify that the active program accepts text input. Try clicking your 
mouse on an area where you can type text and try typing again.
Your computer may be in Sleep mode and have a software or 
resource conflict. When this happens turning the power on returns 
you to the problem instead of restarting the system. To clear the 
condition, press 
Ctrl
Alt
, and 
Del
 simultaneously. Then shut down the 
computer via software, or follow the steps if your program stops 
responding (see “Problems that are easy to fix” on page 49).
The keyboard produces unexpected characters.
A keypad overlay may be on. If the numlock light or cursor control 
overlay light is on, press 
Fn
 + 
F10
 to turn off the cursor control 
overlay light, or 
Fn
 + 
F11
 to turn off the numlock light.
If the problem occurs when both the keypad overlays are off, make 
sure the software you are using is not remapping the keyboard. 
Refer to the software documentation and check that the program 
does not assign different meanings to any of the keys.
Display problems 
Here are some typical display problems and their solutions:
The screen is blank.
Display Auto Off may have gone into effect. Press any key to 
activate the screen.
You may have activated the instant password feature by pressing 
Fn
and
F1 
simultaneously. If you have registered a password, press 
any key, type the password and press 
Enter
. If no password is 
registered, press any key. The screen reactivates and allows you to 
continue working.
If you are using the built-in screen, make sure the display priority is 
not set for an external monitor. To do this, press 
Fn
 and  
F5
 
simultaneously (once). If this does not correct the problem, press 
Fn
 and
F5
 simultaneously again to return the display priority to its 
previous setting.
HINT: Holding the 
Fn
 key and pressing the 
F5
 key several times will 
advance you through the display options.