HP omnibook 510 Manuale Di Servizio

 

Troubleshooting and Maintenance 

 

Troubleshooting Your Computer 

  

Reference 

Guide 

109 

Display problems 

If the computer is on, but the screen is blank 

•  Move the mouse or pointing stick. This will wake the display if it is off. 

•  Try pressing Fn+F2 to increase the display brightness. 

•  Press Fn+F5 in case the internal display was disabled. (Do this three times to return to 

the state you started from.) 

•  If the computer is cold, allow it to warm up. 

If the screen is difficult to read 

•  Try setting the display resolution to its default setting of 1024×768: click Start, 

Settings, Control Panel, double-click Display, then click Settings (Windows 98 or 
2000), or click Start, Control Panel, Appearance and Themes, Display, Settings 
(Windows XP). 

If an external display does not work 

•  Check the connections. 
•  Press Fn+F5 in case the external monitor was disabled. (Do this three times to return 

to the state you started from.) 

•  The external monitor may not be detected. In the BIOS Setup utility, try setting Video 

Display Device to Both in the Main menu.  

•  If you’re using a TV connected to the S-video port on an expansion base, you must 

activate the TV—see “To use a TV set as a monitor” on page 94. 

•  Test the display with the e-Diagtools diagnostics— see “Testing the Hardware” on 

page 129. 

If an external display cannot use high resolutions 

•  For Windows 98, use the default display type for the internal display: Default 

Monitor. If you change the display type, non-Plug-and-Play (non-DDC) external 
monitors will not be able to use resolutions higher than the resolution of the internal 
display. You can check display settings using Display in Control Panel, or by right-
clicking the desktop and then clicking Properties.