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3 Support and 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 or video is

flashing.

Power cord is disconnected. Connect the power cord.

Monitor is off. Press the front bezel 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. See

Connecting the cables

on page 5 for more information.

System is in sleep mode. Press any key on the keyboard or move the mouse to exit

sleep mode.

Video card is incompatible. Open the OSD menu and select the Input Control menu. Set

Auto-Switch Input to Off and manually select the input.

Image appears blurred,

indistinct, or too dark.

Brightness is too low. Open the OSD menu and select Brightness to adjust the

brightness scale as needed.

Check Video Cable is

displayed on 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 you connect 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.

Change the settings to a supported setting. See

Preset

display resolutions on page 30 for more information.

The monitor is off but it did

not seem to enter into sleep

mode.

The monitor's power saving control is

disabled.

Open the OSD menu and select Power Control > Auto-Sleep

Mode and set auto-sleep to On.

OSD Lockout is displayed. The monitor's OSD Lockout function

is enabled.

Press and hold the Menu button on the front bezel 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 disable

the Power Button Lockout function.

20 Chapter 3 Support and troubleshooting

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HP EliteDisplay E240 Specifications

General

3D	No
Aspect ratio	16:9
Screen shape	Flat
Display diagonal	23.8 \
Display technology	LED
Viewable size, vertical	296.46 mm
Contrast ratio (dynamic)	5000000:1
Contrast ratio (typical)	1000:1
Display number of colors	16.78 million colors
Viewable size, horizontal	527.04 mm
Display brightness (typical)	250 cd/m²
Supported graphics resolutions	640 x 480 (VGA), 800 x 600 (SVGA), 1024 x 768 (XGA), 1280 x 1024 (SXGA), 1280 x 720 (HD 720), 1280 x 800 (WXGA), 1400 x 900, 1600 x 900, 1680 x 1050 (WSXGA+)
On/off switch	Yes
USB hub version	2.0
USB Type-A downstream ports quantity	3
Product color	Black
Country of origin	China
Market positioning	Business
Pivot angle	0 - 90 °
Tilt angle range	-5 - 25 °
Panel mounting interface	100 x 100 mm
Sustainability certificates	ENERGY STAR
AC input voltage	100 - 240 V
AC input frequency	50 - 60 Hz
Power consumption (max)	35 W
Power consumption (off)	0.12 W
Annual energy consumption	31 kWh
Power consumption (standby)	0.5 W
Power consumption (typical)	25 W