monitor doesn't display anything!!!

So problem is with monitor.When i started my computer the monitor screen was black after like 5-10 min itshows display normally but now suddenly when i started pc in morning my monitor didnt display anything i try to wait like half hour but nothing please help me!!! my monitor is samsung syncmaster 2220lm and my pc s hp pavilion slim graphics card:gefoce 210 and after like 2 days i left my...



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