problems with installing ubuntu 12.04 on asus 1225c

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http://askubuntu.com – Recently I bought asus 1225c in India thinking that it would come with ubuntu 12.04 pre installed, but it came with express gate cloud installed. I am not able to install ubuntu 12.04. I created a usb with usb-creator from the iso image from ubuntu website, inserted the usb, made sure that the boot order lists the usb first, but then the screen just goes completely blank for few seconds and then grey for few seconds and continues like that forever. I even tried the alternate image of ubuntu but did not help. The same usb on some other laptop works fine. I tried all the usb ports on the netbook (HowTos)