Toshiba portege m400 Manual De Usuario

9-8

User’s Manual

Troubleshooting

Internal LCD display panel

Apparent LCD problems may be related to the computer’s setup. Refer to 
Chapter 7, 

, for more information.

Hard disk drive

No display

Press hotkeys Fn + F5 to change the display 
priority, to make sure it is not set for an external 
monitor.

Markings appear on the 
LCD screen.

The marks may have come from contact with the 
keyboard or Touch Pad. Try wiping the LCD 
screen gently with a clean dry cloth. If markings 
remain, use a good quality LCD screen cleaner, 
taking care to ensure you let the LCD screen dry 
before closing it.

Problems above 
remain unresolved or 
other problems occur

Refer to your software’s documentation to 
determine if the software is causing the difficulty.

Run the diagnostic test.

Contact your dealer if the problems continue.

Computer does not 
boot from hard disk 
drive

Check if a floppy disk is in the floppy disk drive or 
a CD-ROM is in the optical media drive. Remove 
any floppy disk and/or CD-ROM and check the 
Boot priority. Refer to the 

 section in 

Chapter 7, HW Setup.

There may be a problem with your operating 
system files. Refer to your operating system 
documentation.

Slow performance

Your files may be fragmented. Run Disk 
Defragmenter to check the condition of your files 
and disk. Refer to your operating system’s 
documentation or online HELP for information on 
running the Disk Defragmenter.

As a last resort, reformat the hard disk. Then, 
reload the operating system and other files.

If problems persist, contact your dealer.