Set the resolution to 1024 x 768 and also changed the refresh rate to 75 Hertz. In Windows XP this is in Control Panel, Display Properties, Settings, Advanced tab, Monitor tab, Select Screen refresh rate. The blue box diappears.
That means that your inputting to large a resolution into the screen to handle. The maximum for this screen is 1024 x 768 it think. Make sure you resolution is ideally set to that exactly as it is the native resolution and will look the best.
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Hi, > Check Windows proper running or not. > Have a HDD problem, so check it. > Check keyboard num Lock coming light or not. If not coming light then RAM problem. > If all thing is ok then change monitor scree.
On the monitor power board you find an IC called push pull transistors,it is usually paired get to read this IC with your miter a pair of this IC must have gone bad.If dictected replace it, then power the power board and it will display normal.Thank you Jesus.
check your resolution settings and change to 800><600 and try again.If it does not work at 1024><768 try loading monitor driver In display properties it should show BenQ FP731 instead of plug and play monitor.