Barco Coronis 21-inch Installation & user manua Installation And User Manual page 100

General tips
Problems and solutions
Problem description
Screen remains black
Image exhibits noise or
interference
Image contains missing
pixels
Image contains not
enough grayscales
The PC does not start up
100
Possible tests or solutions
• Please check the installation
procedure in this manual
• If the LED at the front is orange, the
display is in stand-by
• Check in the Windows Display
Properties if the display controller
video heads are attached. If not,
there will be no image on the
screen.
• The external power supply may be
defective
•
• The video cable may be of poor
quality
• DVI video cable may not be firmly
connected to the PC or to the
display
• A number of missing pixels may be
normal (inherent in LCD technology)
• You may have installed the driver
software with an inappropriate
selection of Palette Settings (Static
Gray with or without System
Colors). Install the driver software
again using a different setting for
Palette Settings.
• Check the CMOS settings in the PC
BIOS
• The display controller may not be
firmly seated in the PCI / AGP
connector