HP Armada 4200 Armada 4100 and 4200 Families of Personal Computers Maintenance - Page 57

Table 2-28, Solving Screen Problems, Problem, Probable Cause, Solutions

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Problem Characters are dim. Screen is blank. Computer screen is blank and the screen on an external monitor displays information. Screen is blank and the power/suspend light is blinking Screen is blank, the power/ suspend light is blinking, and the battery light is blinking External monitor does not display information Distorted or garbled characters on the screen are mixed with text. Garbled characters on internal display or flashing internal display when connected to external monitor. Table 2-28 Solving Screen Problems Probable Cause Solution(s) The brightness or contrast (if applicable) control is not set properly. Computer screen is in direct light. Display is damaged. You initiated QuickLock/ QuickBlank. You may have another screen blanking utility installed. Screen save was initiated after the Power Management timeout period of inactivity If an STN screen is used, brightness/ contrast needs adjusting. Screen has overheated Suspend was initiated. Display was switched to the external monitor. Adjust the control(s)using Fn+F9 (contrast) and Fn+F10 (brightness). Tilt the display or move computer. Replace the display. Enter the password to exit QuickLock/QuickBlank. Press any key and/or enter the password. Press any key or click the mouse. Use the hotkeys to adjust the brightness/contrast. If the computer is in direct sunlight, move it an allow it to cool. Press the suspend button to exit Suspend. Press the Fn+F4 hotkey to display information on the computer screen. System is in Suspend System has entered a low-battery condition External monitor was connected after the computer was turned on The external monitor signal cable or power cord is not properly connected. The ANSI.SYS driver is not in the CONFIG.SYS file or the path is incorrect. You are using 800 × 600 or higher resolution on external display and have toggled back to internal display, which only supports 640 × 480 resolution. Press the Suspend button to exit Suspend. Enter the power-on password if prompted. Immediately connect the computer to an external power source or replace the battery pack. Press the Fn+F4 hotkey to switch to the external monitor Verify the cables are properly connected. Add the ANSI.SYS driver to the CONFIG.SYS file. Add the following line: DEVICE=C:\ANSI.SYS Restart the computer. If simultaneous display is desired, use 640 × 480 resolution. Continued Troubleshooting 2-29

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Troubleshooting
2-29
Table 2-28
Solving Screen Problems
Problem
Probable Cause
Solution(s)
Characters are dim.
The brightness or contrast
(if applicable) control is not
set properly.
Adjust the control(s)using
Fn+F9
(contrast) and
Fn+F10
(brightness).
Computer screen is in direct light.
Tilt the display or move computer.
Display is damaged.
Replace the display.
Screen is blank.
You initiated QuickLock/
QuickBlank.
Enter the password to exit
QuickLock/QuickBlank.
You may have another screen -
blanking utility installed.
Press any key and/or enter the
password.
Screen save was initiated after
the Power Management timeout
period of inactivity
Press any key or click the mouse.
If an STN screen is used, brightness/
contrast needs adjusting.
Use the hotkeys to adjust the
brightness/contrast.
Screen has overheated
If the computer is in direct sunlight,
move it an allow it to cool.
Suspend was initiated.
Press the suspend button to exit
Suspend.
Computer screen is blank and
the screen on an external
monitor displays information.
Display was switched to the
external monitor.
Press the
Fn+F4
hotkey to display
information on the computer screen.
Screen is blank and the
power/suspend light is blinking
System is in Suspend
Press the Suspend button to exit
Suspend. Enter the power-on
password if prompted.
Screen is blank, the power/
suspend light is blinking, and
the battery light is blinking
System has entered a low-battery
condition
Immediately connect the computer
to an external power source or
replace the battery pack.
External monitor does not
display information
External monitor was connected
after the computer was turned on
Press the
Fn+F4
hotkey to switch to
the external monitor
The external monitor signal cable
or power cord is not properly
connected.
Verify the cables are properly
connected.
Distorted or garbled characters
on the screen are mixed with
text.
The
ANSI.SYS
driver is not in the
CONFIG.SYS
file or the path is
incorrect.
Add the
ANSI.SYS
driver to the
CONFIG.SYS
file. Add the following
line:
DEVICE=C:\ANSI.SYS
Garbled characters on internal
display or flashing internal
display when connected to
external monitor.
You are using 800 × 600 or higher
resolution on external display and
have toggled back to internal
display, which only supports
640 × 480 resolution.
Restart the computer. If
simultaneous display is desired, use
640 × 480 resolution.
Continued