User Guide

2. If you have an HP computer, update your video drivers from the HP website.
Otherwise, you can get the latest updated video drivers from the video hardware
manufacturer's website. The following list shows some of the video hardware websites:
o Check for NVIDIA video driver updates at NVIDIA (in English).
o Check for ATI video driver updates at AMD (in English).
o Check for Intel video support and downloads, Intel Downloads (in English).
3. After updating the video drivers, go back to Step 1 and try to change the screen resolution
again.
note:
If you cannot select the native resolution after updating the video drivers, the graphics adapter
in the computer might not support that resolution and might need to be upgraded.
If the screen continues to flicker after setting the native display resolution and refresh rate,
continue to the next step.
4. Download and install the latest video card drivers. Go back to Step 2 for instructions.
If you already installed the latest video drivers in Step 2, continue to the next step.
5. Check the video cable connections. Unplug the cable and inspect the cable for damage. If the
cable is damaged, replace it with a new cable. Try to use cables less than 3 meters (10 feet).
6. Check the environment around the display. Displays are sensitive to magnetic fields. Speakers,
florescent lights, fans, cell phones, radios, and any other electrical device can cause flickering.
Temporarily move electrical items away from the display to see if they is producing a field that
causes the flicker.
7. If the display has more than one type of connection available such as VGA, DVI, or HDMI, try a
different type of connection.
8. To see if the video coming from the computer is causing the problem, temporarily connect the
display to another computer, such as a notebook computer.
If the flicker is gone when the display is connected to another computer, the graphics adapter
hardware on the first computer might need to be upgraded to use the display.
Several colored horizontal or vertical lines in the display
Several vertical lines are shown on the display.
Figure : Vertical lines in the display