There is a 99% chance that this is hardware. If that is the case, nothing we do here will be able to resolve it. And really, in this case I would hesitate to even attempt troubloeshooting in this type of forum, as each attempted boot may damage things further. Either you have a hugely corrupted hard drive, a power problem, or the hard drive itself has a hardware issue. In each case you do not want to be trying things in order to narrow the problem down. You want to get it into a shop for repair immediately. I am sorry! I wish I had better information for you! But working with it here will just make things worse!