Install Ubuntu 12.04LTS 64bit in Lenovo S205 Failed

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http://askubuntu.com – I have installed Ubuntu 12.04LTS on Lenovo S205 twice, but it would not boot normally. How can I fix this problem? I tried to install dual boot, Windows and Ubuntu. but still it would not work properly. Even, when I installed Ubuntu only, it would not boot too. Installation was okay, but it could not boot to Ubuntu. just stuck on a blank screen. More information is posted in my blog below http://fzakiul.wordpress.com/2012/05/11/lenovo-ideapad-s205-vs-ubuntu/ extremely need a help. (HowTos)