HP (Hewlett-Packard) P720 Computer Monitor User Manual


 
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HP 17” Color Monitor User’s Guide
Troubleshooting
4
Turn off your monitor and reconnect the video cable; then turn on
both your computer and the monitor.
If your monitor screen remains blank after using the previous
procedure, check your video controller and computer system;
your monitor is functioning properly.
Warm-up Time
All monitors need time to become thermally stable the first time you
turn them on each day. Therefore, to achieve more accurate
adjustments for parameters, allow the monitor to warm (be on) for at
least 30 minutes before making any screen adjustments.