Display 2 on laptop

Hello everyone,
I've got a question that I could not find the answer so far. How can I keep my display 2 alive while the lid on my laptop is closed. I could do that on my old laptop with WinXP but so far no luck with Win7. The laptop is Toshiba Tecra A11-07H with intel graphics. So far I got the display cloned and/or extended to my presentation display but once I close the lid the display 2 goes to sleep as well.

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