Question: Problem in Maple11 installation

Dear Sir/Madam I heared that the classic part of maple 11 is more faster than Maple 12 so I decide to install maple 11 but: I cannot install maple 11 in my Notebook. When I Doubleclick on installation it start to extract. but when it reached 100% disappears! I also tested the second theory. in temp folder I double clicked the extracted setup application in windows directory. but no response too! What I need before installation? In addition, after that I installed Maple 12 seccessfully! without any problem! And Also I can Install maple 11 in my office's PC.
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