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User Guide A–1
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 switch on front
panel of the monitor is
turned off.Press the front panel power
Video cable is
improperly connected.Connect the video cable
properly. Refer to Chapter 3,
Setting Up the Monitor, for
Screen blanking utility is
active.Press any key on the
keyboard or move the
mouse to inactivate the
screen blanking utility.
The monitor does not
respond after you
turn on the system.Check power. Check that the monitor’s
power switch is on. Turn off
power and check the
monitor’s power cord and
signal cable for proper
Page 27 from 44
A–2 User Guide
Touc hsc reen Tips
If you experience operational issues with the touchscreen system
either during or after installation, use the tips below to help you
determine the source of the problem.
■If “No Elo touchmonitor found” is displayed on the screen,
install the latest drivers. Touchmonitors with the dual
serial/USB interface require the latest drivers. If you are
replacing an existing installation and see this problem, you
should update your touchscreen driver with one from the Elo
Web site Driver and File Downloads page.
blurred, indistinct, or
too dark.Brightness and contrast
are too low.Press the Menu button to
display the OSD. Use the
or button to adjust
the brightness and contrast
scales as needed.
Screen flashes when
initialized.Turn the monitor off then turn
it on again.
Cable” is displayed
on screen.Monitor video cable is
disconnected.Connect the video signal
cable to the VGA connector
on the computer. Be sure
that the computer power is
off while connecting the
“Out of Range” is
displayed on screen.Video resolution and/or
refresh rate are set
higher than what your
monitor supports.Restart your computer and
enter Safe Mode. Change
your settings to a supported
setting (see “Factory Preset
Display Modes” table in
Appendix B). Restart your
computer so that the new
settings take effect.
Problem Possible Cause Solution
Page 28 from 44
User Guide A–3
■Be sure to calibrate the touchscreen monitor. Touch response
must be aligned to the video image (this is sometimes called
calibration). Normally this need only be done when the touch
drivers are initially installed.
To calibrate the touchscreen:
1. Click the Windows Start button.
2. Select Settings > Control Panel (on later operating systems
the Settings step is omitted).
3. Open the Elo application by double-clicking the Elo icon.
On Windows XP it may be necessary to click the Show
Classic View button on the left side of the screen to see the
4. Click the Alignment/Calibration button.
The Alignment/Calibration button is always on the General
tab of the Elo Control Panel tab set. It may be titled Calibrate,
Align or it may just be an icon (fingers and cross marks on a
5. Touch the target that is displayed in the upper left corner. The
target will reappear in the lower right corner.
6. Touch the lower right target. The target will reappear in the
upper right corner.
7. Touch the upper right target. The next screen is an alignment
8. On the alignment check screen, touch various places on the
screen and see that the cursor jumps to the point of touch.
A progress bar displays the relative time remaining before the
routine will time out; if time-out is reached, the routine is
aborted and the new alignment points are not retained.
If response is correct, touch the Accept button - it may be a
Yes button or a green check.
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A–4 User Guide
Clicking the No or redo arrow icon will display the targets again
to rerun the alignment routine. Remember, you must click the
Accept button to store the new alignment points.
■If the touchscreen is not responding to touch, check your
serial or USB connection by doing the following:
❏Serial Connection - Run the comdump diagnostic utility
to determine if the touchscreen, the serial touch
controller, the computer's serial COM port and the
associated cabling are connected and functioning
properly. Download the latest version of comdump.exe
(7K) from the Elo Web site Driver and Files Download
page. You should save the file where it can be accessed
easily - either to a floppy or to the root of your hard drive.
Comdump is a DOS application, so if you are running
one of the Windows operating systems you must either
boot to a DOS boot diskette or disable the driver so you
can access the COM port from a command prompt.
❏USB Connection - If the Human Interface Device (HID)
is not listed in Device Manager after a USB touchmonitor
is connected, check to determine if a file named
mouhid.sys is in the \windows (or winnt)
◆The file will be missing if a USB mouse has never
been connected to the system.
◆If the file is not there, connect a USB mouse to the
system or copy mouhid.sys from another system.
◆Once mouhid.sys is in the proper location, remove
and reinstall the touch drivers.
Page 30 from 44
User Guide A–5
If you have determined that the HID files are missing or
corrupted ("Error installing mouse" when installing the HID
dfrivers, and also a yellow "!" in Device Manager under
Mouse), check that all of the following files are present in the
If all the files are there, try replacing them with the same files
from a known good system. It is suggested that you save the
original files in a backup directory.
■The touch can not be held longer than 10 seconds.
IntelliTouch controllers have a built-in two minute untouch
time-out. By default, the 4.20 Universal driver generates an
untouch after 10 seconds of constant touch. The untouch
time-out can be changed by modifying a registry key. This
time-out will override any registry time-out value if the
registry value exceeds 120 seconds (120000 milliseconds). To
change the time-out time:
1. Run regedit or regedt32 (click Start > Run, enter regedit).
2. Drill down to HKEY_LOCAL_MACHINE > SYSTEM >
CurrentControlSet > Enum.
a. For serial controllers: SERENUM > ELOSERIAL >
******* > Device Parameters.
b. For USB controllers: HID > VID_04e7 > ******** >
***************** > Device Parameters.
✎The "******" entries are id numbers used by the Windows