Toshiba P755D-S5266 Reference Guide

34

5.375 x 8.375 ver 3.1

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.

Here are some typical display problems and their solutions:

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.

If you are using an external monitor:
❖ Check that the monitor is turned on.
❖ Check that the monitor’s power cord/cable is firmly plugged 

into a working power outlet.

❖ Check that the cable connecting the external monitor to the 

computer is firmly attached.

❖ Try adjusting the contrast and brightness controls on the 

external monitor.

❖ Press 

Fn

 and 

F5

 simultaneously to make sure the display 

priority is not set for the built-in screen.