I have an HP laptop with Ubuntu 12.04 issued by my college. But since I am more of a Windows guy, I installed Windows 8 to it. However, when the laptop was issued, I was told that I should not change the OS. Now that the academic year is ending, I have to give the laptop back to the college, and for that, I need to change the OS back to Ubuntu. Can anyone tell me where can I download the exact OS??
I don't know what is this, here is the link to an image of the exact release version