[ubuntu] Can't install ubuntu in HP Pavilion G-Series Laptop

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http://ubuntuforums.org – I had been using Ubuntu for last few years on my Lenovo laptop without any problem but when I tried to install Ubuntu in my HP pavilion G-Series Laptop I got into problem . Ubuntu gets stuck at the install screen so I dont know what the problem is ? I really love ubuntu and dont want to leave it but somehow I am not able to install it in my HP Laptop. (Hardware)