Right, so I have 3 boot options upon starting my pc, the first is an unactivated version of windows 7 ultimate n that I don't have a key for and don't want to use either. The second is called windows 7 and when selected asks me to insert an installation disc but when this is done it just returns back to the same screen. The third is ubuntu and says pretty much the same as the second one. Please be aware that I am terrible with pc's and that I also did not put these thing's on my hard drive and am just trying to sort out an issue with a pc that has plagued me for a while now. All help will be greatly appreciated also
Edit: The motherboard is an Asus p8h77-i, forgot to mention that originally

Edit: The motherboard is an Asus p8h77-i, forgot to mention that originally