HP 15-inchhp55 - Manual (Page 11)

English English 9
HP 15” Color Monitor User’s Guide
Troubleshooting
Troubleshooting
Before calling Hewlett-Packard check the following items:
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 computer previously set to
monitor’s supported resolution.
No picture and LED is on.
• Check if monitor is not in power saving mode.
• Adjust contrast and brightness using the adjustment buttons.
• Check if computer is switched on.
• Check if video cable has no bent pins.
• Test if monitor works on another computer previously set to
monitor’s supported resolution.
Colors are not pure.
• Shut down your monitor and switch it on after 30 minutes.
Picture is not centered.
• Adjust picture using the adjustment buttons.
Picture is fuzzy.
• Use the Recall function.
• Reduce contrast using the adjustment buttons.