HP 21” Color Monitor User’s Guide
Troubleshooting
No picture and LED is off
•Check if monitor is switched ON
•Check if power cord is properly connected
•Check if electrical outlet is connected
•Test if monitor works on another PC previously set to monitor’s supported resolution
No picture and LED is on
•Check if monitor is not in power saving mode
•Try changing the video input selection
•Adjust contrast and brightness through Menu using the control buttons
•Check if PC is switched on
•Check if video cable has no bent pins
•Test if monitor works
Colors are not pure
•Degauss your monitor
•Shut down your monitor and switch it on after 30 minutes
Picture is not centered
•Adjust picture through Menu using the control buttons
Picture is fuzzy
•Use the Recall function
•Reduce contrast through Menu using the control buttons
•Adjust moire reduction to zero
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