Monitor blacks out about 20-30 minutes after turning on.inspite of setting resolution and frequency the problem persists,drivers are ok,power option is set to never .still the problem exists. green light keeps glowing,music keeps playing but screen is black with message not optimum resolution.
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Re: screen blacks out
OK you need to try this monitor on another pc so as to write off a faulty graphics card.
If your settings on monitor match the pc and youve tried the auto settings button, there is a faulty lcd for replacement.
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Maybe the frequency of the monitor is not supported, try changing monitor frequency from 75Hz to 60Hz, Screen Resolution > Advanced Settings > Monitor Tab > Screen Refresh Rate. If this doesn't work try installing new drivers, www.nec.com
The reason behind the out of range (frequency of monitor) because the video display adapter is trying to set resolution more than what the monitor (screen) is capable of. In this case, try to boot your computer in Safe Mode using F8 function key while starting your computer. Once you are in safe mode, try to decrease the resolution of monitor to the lowest resolution level and apply the settings. Now try to boot computer in normal mode once again, you will get the settings which you have applied in safe mode. Adjust the screen resolution accordingly till the settings work with the monitor (screen).
The PC is sending out the resolution that is too high for the monitor to handle, you need to set the resolution of the PC to be the native resolution of the monitor and set the refesh rate to be at 60Hz.
If you are getting a splash screen (COMPAQ) then video goes black, you can try this. Boot system in Enable VGA mode from the F8 menu and see if you get to the desktop. If you do, you can then go to display properties and adjust the resolution to the Optimal for the monitor.
If you do not get a splash screen, check you cable connections and ensure the Video cable is properly seated and no bent pins. If issue is occurring after the system was moved, also ensure that the correct video adapter connection is being used on the tower, as there may be 2
Once the drivers are installed, your issues should be resolved - the driver will allow only the modes that can be displayed on the monitor - probably giving you options for resolutions you hadn't seen before.
Start your computer and press the F8 when the manufacturer's logo screen is showing. This will bring you to the Windows startup menu. Pick "start in VGA mode" and windows will start up with video settings you monitor can handle. Then you can change your video settings so Windows will start normally with your monitor.
Please reduce the resolution/ Frequency of your Display Card in system and see whether you can see some thing. Else connect this monitor to another system with low resolution. Let me know your feedback.