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5.4 Trouble & Trouble shooting
Common
Possible Reasons
Malfunction
No power supply
The device is
Improper device
not operating
operating
environment
The display has not
been turned on
Display output skip
to other display
channel
The display is under
"power saving"
The external
mode
display is
The luminance
black
control is set to
"Black"
Power cable or
display cable is not
connected
Incorrect
Incorrect BIOS
time or date
setting
on PC
BIOS setting
is correct
while the
Insufficient backup
time and
battery capacity
date are not
correct
USB port is disabled
in BIOS
USB2.0 device is
USB device
connected while
has no
USB 2.0 is disabled
response
USB port is not
supported by the
operating system
Trouble shooting and solution
Please check the power supply and the power
cable/connector
1. Check the environment conditions
2. Please wait for 12 hours before powering on
the device shipped in cold day.
Turn on the display
After enter OS(check light through "Num Lock")
Use composite key "Ctrl+ALT+F1/F2/F3/F4" to
switchover video output between
VGA/DVI/LVDS/HDMI
Press any key on the keyboard.
Increase the screen luminance by luminance
control. Please refer to the instructions of the
display for detailed information.
1. Please check whether the power cable &
display cable is correctly connected with the
display, the system unit or the ground port。
2. Contact technique support if the screen
remains black after implementing the above
measures.
Follow the power-on prompt and press the key to
enter the BIOS setup, adjust the time and date in
BIOS setup.
Replace the battery
Use other USB ports or enable that port.
Enable USB 2.0.
1. Enable USB Legacy Support for the mouse &
keyboard (legacy USB is supported);
2. For other device, appropriate USB drivers are
required.
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