I took my Macbook into the Genius Bar and all’s now well with my computer. It’s actually better than before as I’m now on a more current operating system. I explained the problem and the Genius asked who installed the new hard drive, when I told him I did, he gave me a high five. Satisfaction. The little problem was I needed to partition the hard drive.
The Genius also said that if I wanted I could install more memory myself since that’s found in the slots that a perpendicular to the hard drive. I just may.