Hey there folks really need some advice here, after a screwed up attempt using boot camp to install windows in which I couldn't switch back to OS X. I went ahead and installed a new 1 TB hard drive, i turn the power on and have left my leopard os disc in the drive, i'm holding down the key and it won't boot from the disc. It takes me to a black screen saying No Boot Disc, press any key to restart. I'm stumped what to do, please i need some immediate advice. I can't even get the disc to eject from the computer either, luckily i had everything backed up with time machine.