HP (Hewlett-Packard) V191 Benutzerhandbuch

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A. Troubleshooting
Solving Common Problems
The following table lists possible problems, the possible cause of each problem, and 
the recommended solutions:
Problem Solution 
Problem & Question
Possible Solutions
Power LED Is Not ON
Make sure the power button is ON and the Power Cord is 
properly connected to a grounded power outlet and to the 
monitor. 
No Plug & Play
In order for the Plug & Play feature of the monitor to work, 
you need a Plug & Play compatible computer & video card.  
Check with your computer manufacturer. Also check the 
monitor's video cable and make sure none of the pins are 
bent. 
Make sure the HP Monitor Drivers are installed (HP Monitor 
Drivers are available at : http://www.hp.com/support) 
Picture Is Fuzzy & Has 
Ghosting Shadowing 
Problem 
Adjust the Contrast and Brightness Controls. 
Make sure you are not using an extension cable or switch 
box. We recommend plugging the monitor directly to the 
video card output connector on the back of your computer. 
Picture Bounces, Flickers Or 
Wave Pattern Is Present In 
The Picture
Move electrical devices that may cause electrical 
interference as far away from the monitor as possible. 
Use the maximum refresh rate your monitor is capable of at 
the resolution your are using. 
Monitor Is Stuck In Active 
Off-Mode
The Computer Power Switch should be in the ON position. 
The Computer Video Card should be snugly seated in its 
slot. 
Make sure the monitor's video cable is properly connected to 
the computer.
Inspect the monitor's video cable and make sure none of the 
pins are bent. 
Missing one of the primary 
colors (RED, GREEN, or 
BLUE)
Inspect the monitor's video cable and make sure that none 
of the pins are bent. 
Make sure the monitor's video cable is properly connected to 
the computer. 
Screen image is not 
centered or sized properly
Adjust Horizontal Position and Vertical
 
Position or press hot-
key (OK). 
Picture has color defects 
(white does not look white)
Adjust RGB color or select color temperature 
Horizontal or vertical 
disturbances on the screen
Use Windows shut-down mode. Adjust CLOCK and Clock 
Phase or press the OK button to display ideal setting