[ubuntu] Installation Problem - Black screen with underscore

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http://ubuntuforums.org – Hello, I burned Ubuntu 12.04 LTS 64bit on to a DVD and proceeded to reboot in to the install menu, I get up to the Install choice menu, and select 'Install Ubuntu' but after I select that, it just has a black screen with a flashing underscore! This is with nomodeset on, without that on it's just a black screen. :mad: I used MD5SUM to make sure that it is working and it is all good. Btw I want to dual boot this alongside Windows 7. I appreciate any help - Scorched912 (Hardware)