Hi Mike, Sorry for the delay..My answer is 100% correct as I have seen this problem before. These are the steps recommended by Apple, not by me. We just started troubleshooting and we've not finished yet. Those are the basic troubleshooting steps. Please try my suggestion at least Mike.
Mike, 99% of times your Mac will make chime/startup sound when you reset the PRAM, but sometimes it will not. Usually it will take only 6 seconds to reset the PRAM. The problem is not with the Mouse, but with the system files. That is why we are trying Safe Mode and Disk Utility to isolate the problem and fix it.
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If you want to continue, please let me know and I will stay with you until we fix the problem. If you are not satisfied, you can always go for refund.