Buy a drive or drive case that is not bus powered.
Look for help in MacBook Pro forums.
Helps to include what drive and drive case you used and switched to (you didn't need a tech).
You can find good selection and assortment of reliable cases from OWC :
Not knowing what macbook whether you can use USB3, Thunderbolt and other interfaces that would be better.
Direct you to the proper forum for MacBook :
MacBook Series Forums
Mac OS X Forum
This forum deals with a desktop/tower 65lb Mac Pro
Thank you very much for your input, somehow you triggered something in me that reminded me that since my computer is not as old as the new drive case and I received the message saying the hub was taking too much energy. i thought that maybe I should buy a powered hub to ease the power drainage and guess what? It worked!!!!!!