Toshiba Satellite 2800-S201 User Guide - Page 219

The screen does not look right., The built-in screen flickers.

Page 219 highlights

If Something Goes Wrong Fixing device-related problems 219 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. If you are using an external monitor:  Check that the monitor is turned on.  Check that the monitor's power cable is firmly plugged into a working power outlet.  Check that the cable connecting the external monitor to the computer is firmly attached.  Try adjusting the contrast and brightness controls on the external monitor.  Press Fn and F5 simultaneously to make sure the display priority is not set for the built-in screen. The screen does not look right. You can change the display settings by clicking a blank area of the desktop with the AccuPoint II secondary button, then clicking Properties. This causes Windows Millennium Edition to open the Display Properties dialog box. The Appearance tab of this dialog box allows you to choose the colors for the screen. The Settings tab allows you to choose the screen resolution. The built-in screen flickers. Some flickering is a normal result of the way the screen produces colors. To reduce the amount of flickering, try using fewer colors. Part II: Technical Reference

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Part II: Technical Reference
If Something Goes Wrong
Fixing device-related problems
219
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.
If you are using an external monitor:
Check that the monitor is turned on.
Check that the monitor’s power cable is firmly plugged
into a working power outlet.
Check that the cable connecting the external monitor to
the computer is firmly attached.
Try adjusting the contrast and brightness controls on the
external monitor.
Press
Fn
and
F5
simultaneously to make sure the display
priority is not set for the built-in screen.
The screen does not look right.
You can change the display settings by clicking a blank area
of the desktop with the AccuPoint II secondary button, then
clicking Properties. This causes Windows Millennium
Edition to open the Display Properties dialog box. The
Appearance tab of this dialog box allows you to choose the
colors for the screen. The Settings tab allows you to choose
the screen resolution.
The built-in screen flickers.
Some flickering is a normal result of the way the screen
produces colors. To reduce the amount of flickering, try
using fewer colors.