Awhile ago, the harddrive to my laptop failed so I just bought a new one. I didn't transfer anything over because I had no important files. I did, however, have to install the OS again (I was using Windows Vista). This was no problem because at my college, they gave out Windows CDs. I got a Windows 7 CD and installed it onto my computer. However, I couldn't activate it because the CD only allowed me to install Windows 7 as an upgrade (which I wasn't doing because I had a blank hard drive). I do have a Windows XP disc, according to my knowledge, you can't downgrade operating systems (I did try to pop in my XP disc, but the install didn't work).
So now I'm wondering if there was a way to delete my Windows 7 completely and reinstall windows XP, or even some other way to get XP back onto my computer.