HP Z40c G3 39.7" 21:9 Curved 5K IPS Monitor - Manual (Page 33)

Support and troubleshooting 4
If your monitor is not working as expected, you might be able to resolve the issue by following the instructions
in this section.
Solving common issues
The following table lists possible issues, the possible cause of each issue, and the recommended solutions.
Table 4-1 Common issues and solutions
Issues Possible cause Solution
Screen is blank or video is
blinking.
Power cord is disconnected. Connect the power cord.
Monitor is off. Press the monitor 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. For more information, see
Connecting the cables on page 11 .
System is in Auto-Sleep Mode. Press any key on the keyboard or move the mouse to
inactivate the screen blanking utility.
Video card is incompatible. Open the OSD menu and select the Input menu. Set Auto­
Switch Input to Off and manually select the input.
or
Replace the video card or connect the video cable to one of
the computer’s on-board video sources.
Image appears blurred,
indistinct, or too dark.
Brightness setting is too low. Open the OSD menu, and select Brightness to adjust the
brightness scale as needed.
“Check Video Cable” is
displayed on the screen.
Monitor video cable is disconnected. Connect the appropriate video signal cable 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 the monitor
supports.
Change the settings to a supported setting (see 100.8 cm
(39.7 in) model on page 33 ).
The monitor does not enter
into a low-power sleep state.
The monitor's power saving control is
disabled.
Open the OSD menu and select Power, select Auto-Sleep
Mode, and then set auto-sleep to On.
“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
feature is enabled.
Press and hold the Power button for 10 seconds to unlock the
power button function.
The camera and USB ports do
not work, but the monitor is
turned on.
There is no upstream USB connection. Be sure that the host computer is connected to the monitor
with a USB Type-C to USB Type-C cable or a USB Type-C to
USB cable.
28 Chapter 4 Support and troubleshooting