Oh man. I put in a cd that my computer was unable to read. I tried to eject it using disk utility but it failed. I read that another option was to restart the computer and hold down command, option, o, and f at the same time to open disk firmware to eject it. instead of actually working, my computer froze at the rstart screen, and i have no idea what to do - and i am unable to insert a disc. please help!