Toshiba U500 用户手册

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site at 

Refer to this site often to stay 

current on the most recent software and hardware options for your 
computer, and for other product information.

For more information on maintaining battery power, see 

.

If, when you type, strange things happen or nothing happens, the 
problem may be related to the keyboard itself.

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.

You may need to update your keyboard driver. Refer to the 
documentation that came with the keyboard or to the keyboard 
manufacturer's Web site.

The keyboard you connected may be defective or incompatible with 
the computer. Try using a different make of keyboard.

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.