When my dell flat screen monitor is turned on the screen remains black but there is a floating box on the screen that states 1:Analogy self assessment. The box also has thick parallel panels with the colors red, white, or blue on a panel within the box.
Please advise what is going on.
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Always start with checking the connections/cables. If they are secure, verify that the monitor is set to display the correct signal (ie. Analog or Digital by pressing the buttons on the monitor) You should see text on the monitor screen letting you know the display type.
http://support.dell.com/support/edocs/monitors/S1709W/en/ug/operate.htm#Using the Front Panel
NOTE: You can also lock or unlock the OSD by pushing and holding thebutton for 15 seconds. (Top of the buttons on right side)
It shouldn't make any difference which monitor you are connecting to any computer. In fact, I am running a 19" HP Flat Panel on my Dell Dimension 2400 right now. It is NOT a wide screen monitor as the Dell built in graphics card will not support the RESOLUTION RATIO required for the wide screen. Check what setting is "native resolution" for your monitor and see if your graphics card will support it. If not, using your old monitor, try different resolution settings. Right click on your desk top, click on properties and that should bring up the display properties box. Try a lower setting as larger settings are the ones that will give you a black screen. It will probably give you a smaller picture on your old monitor, or perhaps smaller or larger icons on the desk top. Accept the new settings, turn off your computer and switch monitors, and turn your computer back on. If you get a picture, but it does not fill the whole screen or the icons seem too large or small, then go back into properties from the desktop and try a different resolution ratio until the picture seems correct.
It will be compatible with the system, just keep on thing in mind, whatever resolution you set your computer at you may have to keep the ratio aspect active so that way the screen looks properly displayed.
just try running the Test on the monitor(monitor self test) ie disconnecting the video cable of the monitor & leaving the power cable connected & then see if u r getting the red,blue,green multicoloured bard moving on the screen or not,if yes then the monitor is fine otherwise the monitor is bad.
Check that your monitor is connected properly and tightly to the computer. If it is, then the monitor may be bad. Borrow a friend's monitor and try to see if it works, if someone else's monitor works, then replace your monitor.