I have an HP Pavilion g6 that came with Windows 7 but I upgraded to Windows 8 pro. Now I try to install Ubuntu so I made my bootable USB. Once booted on my USB, I can use Ubuntu just fine using the "try it" version. But when it comes to installing, I select "install Ubuntu inside Windows 8" and when I continue, my laptop reboots with Windows 8 like if nothing happened. Please help!!