HT5548 my screen comes as blank, Desktop and all its icons are not displayed, what to do?

My screen is blank and desktop is not displayed

Hello Ketan Shukla,
I'd recommend taking a look through the following article for some useful troubleshooting steps.
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/HT1573
Cheers,
Allen

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