Have you tried the monitor on another computer? If so, and it works, the issue is with your graphics settings on your computer. LCD and plasma based monitors often come with a protection circuit that disables the monitor if the synch or refresh rate are beyond it's capabilities. this is to protect your monitor from damage.
Do not exceed your monitor's max resolution.
Resolution is determined the following way:
Width x Height @ Refresh Rate
For your model:
- Max Resolution 1440 x 900 @ 75Hz
More detailed information about your monitor can be found
HERE. If your monitor is still under warranty, and you find it to be faulty, you may be able to send it to the manufacturer for repairs.
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