I've had Ubuntu installed after some difficulty (mainly with creating a bootable USB on my Macbook) but decided I don't really like using it and would like to use Windows 7 instead as I have a licence for it.
I've created numerous bootable USB's via Unetbootin/Boot Camp Assistant and a friend created one on Windows XP but I can never get them to boot. When I choose the USB stick it turns to a black screen with a white, blinking cursor but nothing else happens.
Please could someone help me? I'm getting rather annoyed with it all.