Toshiba NB505 User Manual

User’s Manual

6-8

NB500/NB505/NB520/NB525/NB550D/NB555D Series

Apparent computer's display panel problems may be related to the 

computer's setup and configuration - please refer to the HW Setup section 

in Chapter 4, Utilities & Advanced Usage, for further information.

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.

Computer does not 

boot from hard disk 

drive

Check to see whether there is a CD-ROM/DVD-

ROM in the optical disc drive - if so remove it and try 

to start the computer again. 
If this has no effect, check the Boot Priority setting 

within the TOSHIBA HW Setup utility - please refer 

to the 

 section in Chapter 4, Utilities & 

Advanced Usage for further information.

Slow performance

The files on the hard disk drive may be fragmented - 

in this instance you should run the disk 

Defragmentation utility to check the condition of 

your files and the hard disk drive. Please refer to the 

operating system's documentation or online Help 

File for further information on operating and using 

the Defragmentation utility.
As a last resort you should reformat the hard disk 

drive and then reload the operating system and all 

other files and data. If you are still unable to resolve 

the problem, contact your reseller, dealer or service 

provider.