thefearofme :
What should I try with the recovery disk? I have no OS installed, My Windows 7 is corrupt, so what exactly do you want me to do?
I hit the submit button by accident when I was doing something else, so my previous post is updated to what I meant to say.
If you have a friend who has the same edition of Windows 7 as you and it's not an OEM version, then you should be able to at least boot up from the DVD and try to initiate a repair of your installed OS. Otherwise, you can reinstall Windows but use YOUR key from his DVD. I don't know how illegal this is, but since you already have a key, I can't see what the issue would be. Now, to copy his DVD might be another issue. I just don't know how ethical it is.
Your best bet is to go and purchase another copy and keep it away from the sun. Mine is tucked away in the plastic case it came from in a drawer. You could go and get an OEM copy of Windows 7. It's cheaper than the retail version, but it will be tied to your motherboard and if you upgrade your motherboard or overhaul your complete PC, then your Windows 7 will be invalidated and won't activate because of the hardware change.
Not sure what is up with the XP DVD not booting. Are you sure it's a complete copy of XP or just the Service Pack? I have a feeling it might be just a CD with the service pack on it and not the complete XP installation, hence the BOOTMGR not found.