Support And Troubleshooting; Solving Common Problems - HP 54.61 cm/21.5-inch User Manual

3

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 blurred,
indistinct, or 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 sleep
mode.
OSD Lockout is displayed.
Power Button Lockout is
displayed.
12 3 Support and troubleshooting
Possible Cause
Power cord is disconnected.
Monitor is off.
Video cable is improperly connected.
System is in sleep mode.
Video card is incompatible.
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 Power button.
NOTE: If pressing the Power button has no effect,
press and hold the Power button for 10 seconds to dis-
able the Power button lockout feature.
Connect the video cable properly. See Connecting the
cables on page 6 for more information.
Press any key on the keyboard or move the mouse to
exit sleep mode.
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 you connect the video cable.
Change the settings to a supported setting. See Preset
display resolutions on page 19 for more information.
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 bottom side
of the front bezel for 10 seconds to disable the OSD
Lockout function.
Press and hold the Power button for 10 seconds to dis-
able the Power Button Lockout function.