I have windows seven also I installed Ubuntu 12.04 with Wubi. I haven't had any problem with my 12.04. Now I downloaded 14.04 32 bit and I make my flash boot able with this guide also I uninstall my 12.04 from add or remove program !! (...Wubi make this ability ) Now what next? When I start my computer still I see grub (But I think I should not see that because I uninstall that from win 7 ) also what I should do with my boot able flash- which I installed 14.04 on that- in order to install that. Note My aim is to format windows 7 and 12.04 and just have 14.04 on my computer.