MacBook Pro 13" 2010 hitachi hard drive HTS545025B9SA02 locks up
After installing OS X 10.9 I seemed to have HD problems. I got it back up and now the it locks up and I can hear the HD making intermittent clicking noise. Never in the same spot or application, I Can Move the curser around but can't load anything. Sometimes it will go back to normal or I will have to shut it down And restart. I wondering if it is a hardware problem or software problem.
MacBook Pro, OS X Mavericks (10.9)