I have moderate amounts of computer savvy-ness but a couple of my friends that are better at computers than I helped me dual partition my hard drive with ubuntu and windows 7. The computer came with win 7 and the ubuntu boot went fine. I know it's still partitioned right because my hard drive space is still split but when I start up my computer I'm given no option to boot unbuntu. Pressing F12 just gives me win 7 booting options. I've been reading online and it seems like some people have trouble with GRUB2 but I don't know how to tell if that's my issue or how to fix it. Any advice would be greatly appreciated.