Appendix B Support And Troubleshooting; Solving Common Problems; Button Lockouts - HP K1M38AA User Manual

B Support and troubleshooting

Solving common problems

The following table lists possible problems, the possible cause of each problem, and the
recommended solutions.
Problem
Screen is blank or video is
flashing.
Image appears too dark.
Check Video Cable is
displayed on screen.
Input Signal Out of Range
is displayed on screen.
The monitor is off but it did
not seem to enter into a
low-power sleep mode.
OSD Lockout is displayed.
Power Button Lockout is
displayed.

Button lockouts

Holding down the Power button or Menu button for ten seconds will lock out the functionality of that
button. You can restore the functionality by holding the button down again for ten seconds. This
functionality is only available when the monitor is powered on, displaying an active signal, and the
OSD is not active.
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Appendix B Support and troubleshooting

Possible Cause
Power cord is disconnected.
Power button is turned off.
Video cable is improperly
connected.
System is in sleep mode.
Video card compatibility.
Brightness is too low.
Monitor video cable is
disconnected.
Video resolution and/or refresh
rate are set higher than what the
monitor supports.
The monitor's power saving control
is disabled.
The monitor's OSD Lockout
function is enabled.
The monitor's Power Button
Lockout function is enabled.
Solution
Connect the power cord.
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.
Connect the video cable properly. See
cables on page 7 for more information.
Press any key on the keyboard or move the mouse to
inactivate the screen blanking utility.
Open the OSD menu and select the Input Control menu.
Set Auto-Switch Input to Off and manually select the
input.
Open the OSD menu and select Brightness to adjust the
brightness scale as needed.
Connect the appropriate video signal cable between the
computer and monitor. Be sure that the computer power
is off while connecting the video cable.
Change the settings to a supported setting (see
Recognizing preset display resolutions on page
Open the OSD menu and select Power Control > Auto-
Sleep Mode and set auto-sleep to On.
Press and hold the Menu button on the on the right side
of the monitor for 10 seconds to disable the OSD Lockout
function.
Press and hold the power button for 10 seconds to
unlock the power button function.
Connecting the
24).