[ubuntu] cant boot ubuntu or windows

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http://ubuntuforums.org – I partitioned my hard drive and installed ubuntu on a separate one from windows 7. I did this from a live usb created using lili. Now when I boot, it goes straight to trying windows, and it gives me windows cant boot, status 0xc0000225, needed device inaccessible. This is the third time I have reinstalled windows and linux, and this happens everytime. Is this fixable, or am I screwing up somewhere? (Hardware)