HP Compaq LA2405x user manual download (Page 19 of 27)

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Page 19 of 27
A
Troubleshooting
Solving Common Problems
The following table lists possible problems, the possible cause of each problem, and the
recommended solutions.
Problem
Possible Cause
Solution
Screen is blank.
Power cord is disconnected.
Connect the power cord.
Power button on front panel of
the monitor is turned off.
Press the front panel power button.
NOTE:
If pressing the power button has no
effect, press and hold the power button for 10
seconds to disable the power button lockout
feature.
Video cable is improperly
connected.
Connect the video cable properly.
Screen blanking is active.
Press any key on the keyboard or move the mouse
to inactivate the screen blanking utility.
Screen image appears distorted; text
is fuzzy or blurred; image quality is
degraded.
The computer’s graphics card
resolution is set lower or
higher than the monitor’s
native resolution.
Set the computer’s display resolution to the same
mode as the monitor’s recommended native
screen resolution to provide the best picture
quality.
Image appears blurred, indistinct, or
too dark.
Brightness and contrast are
too low.
Press the
OK/auto
button on the front panel. If this
does not correct the image, press the
Menu
button
to open the OSD Menu, and adjust the brightness
and contrast scales as needed.
Image is not centered
Position may need
adjustment.
Press the
Menu
button to access the OSD menu.
Select
Image Control/Horizontal Position
or
Vertical Position
to adjust the horizontal or vertical
position of the image.
Check Video Cable
is displayed on
screen.
Monitor video cable is
disconnected.
Connect the appropriate video cable (DVI or VGA)
between the computer and monitor. Be sure that
the computer power is off while connecting the
video cable.
Input Signal Out of Range
is
displayed on screen.
Video resolution and/or
refresh rate are set higher
than what the monitor
supports.
Restart the computer and enter Safe Mode.
Change the settings to a supported setting (refer to
the monitor user guide for supported resolution
settings). Restart the computer so that the new
settings take effect.
The monitor is off but it did not seem
to enter into a low-power sleep mode.
The monitor's power saving
control is disabled.
In the monitor's OSD menu, select
Management
>
Power Saver
. The control should be set to
On
to
allow the monitor to enter into low-power modes.
OSD Lockout
is displayed.
The monitor's OSD Lockout
function is enabled.
Press and hold the
Menu
button for 10 seconds to
disable the OSD Lockout function.
Power Button Lockout
is displayed.
The monitor's Power Button
Lockout function is enabled.
Press and hold the
Power
button for 10 seconds to
unlock the power button function.
ENWW
Solving Common Problems
13
Sample