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18 Troubleshooting and Diagnostics zt1000/xz300 and xt1500 Series
Troubleshooting and Self-Repair Guide
If a DVD movie doesn’t fill the screen
• Each side of a double-sided DVD has a different format (standard or widescreen). In widescreen
format, black bands appear at the top and bottom of the screen. To view the standard format, flip
the disk over and play the other side.
If a DVD doesn’t play with two displays
• If both displays are active, press Fn+F5 to switch to one display.
• If you’re using both displays, the DVD image will not appear on any display set up as
“secondary.” Click Start, Control Panel, Appearance and Themes, Display. Click Advanced on
the Settings tab, then click the Displays tab and change settings.
Display Problems
If the notebook does not recognize the display
When the notebook starts up, it automatically re-activates the display that was in use when Windows
was last shut down. If you dock to a simple port replicator or attach a monitor while the notebook is
off, the notebook may not properly recognize the monitor. If this happens, choose the display that you
want to use in either of these ways:
• Press Fn+F5. (Do this three times to return to the state you started from.)
• Click Start, Control Panel, Appearance and Themes, Display, Settings, and then click the
Advanced button. On the Displays tab, select the Display Device you want, and then click OK.
If the notebook is on, but the screen is blank
• Move the mouse or tap the touch pad or scroll pad. 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 notebook is cold, allow it to warm up.
If the screen is difficult to read
• Try setting the display resolution to its default of 1024×768: click Start, Control Panel,
Appearance and Themes, Display, Settings.
• Try adjusting the size of the desktop icons and labels.
If part of the Windows desktop is not visible and you have to scroll down to see the
taskbar, or if the desktop does not fill the entire display and has a black border
• Your display resolution may be set incorrectly. Adjust the resolution as needed.
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.)
• If you’re using a TV connected to the S-video port, you must activate the TV.