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The following table lists some common monitor problems that you may
encounter and their solutions.
If you can't solve your difficulties, please contact Koorui customer services.
Official website: http://www.koorui.net/
E-mail: support@koorui.net
Chapter Ⅴ Q&A
All four sides of the screen
appear blank when using
an HDMI cable or DP
cable to connect the
product and PC.
The blank that appears on the screen has nothing to do with our product.
The blank on the screen is caused by a PC or graphics card.
Please adjust the screen size in your graphics card's HDMI or DVI settings
to resolve this issue.
If the graphics card settings menu does not have the option to resize the
screen, please update the graphics card driver program to the latest version.
(Contact your graphics card or PC manufacturer for more details on
adjusting your screen.)
The power LED goes
out. The screen won't
turn on.
Check if the power cord is connected correctly. If there is a problem with
the monitor screen, run a self-diagnostic to check that the monitor is
working properly.
Display "Over Frequency"
This message appears when the signal from the graphics card exceeds
the maximum resolution or frequency of the product.
Change the maximum resolution and frequency to suit product performance.
The image on the screen
looks distorted.
Check the cable connection with the product.
The image is not clear.
Remove all accessories (video extension cord, etc.) and try again.
Set the resolution and frequency to the recommended level.
The screen is unstable
and shaky. There is a
shadow or ghosting on
the screen.
Check if the resolution and frequency of the PC are within the range of the
resolution and frequency that compatible with the product. Next, change
the settings if needed.
The screen is too bright,
while the image is too
dark.
Adjust the brightness and the contrast.
The screen colors do not
match. Colors on the
screen are shaded and
distorted. The white color
doesn't look really white.
Change the color settings.
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