WHAT TO DO WHEN MONITOR FAILS TO DISPLAY IMAGE

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Check the obvious things first. Verify the monitor is plugged in (and that the receptacle has power), the video cable is connected to the video card, the computer and monitor are turned on, and the brightness and contrast settings are set to the middle of their range. 

If none of these steps solves the problem, your monitor, video card, or video cable may be bad. Check the suspect monitor on a known-good system or a knowngood monitor on the problem system. If you have ACPI or APM power management enabled, it may be causing the problem. Some systems simply refuse to wake up once power management puts them to sleep. 

We have seen such systems survive a hardware reset without restoring power to the monitor. To verify this problem, turn off power to the system and monitor and then turn them back on. If the monitor then displays an image, check the power management settings in your BIOS and operating system and disable them if necessary. 

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