Ask Mac Questions and Get Answers from Experts ASAP
Hi, I'm Pete. Welcome to JustAnswer! I'm reviewing your question now, and will post back with your reply ASAP.
If you cannot start by holding shift then the hard drive likely has a fault.
Can you try starting from a boot DVD?
You can borrow a recovery disc or USB device from anyone else with the same version of OS X, or create a recovery disc or USB device using their machine.