Replaced hard drive, now computer moves slow
I have a mid-2009 MacBook Pro 15. When it wouldn't boot properly, diagnostics told me there were S.M.A.R.T. errors affecting the hard drive. I replaced the it with a new (Toshiba L200) hard drive--a larger one, 1 TB.
After finally booting the laptop using my external hard drive (MyBook), I installed OSX Mavericks from the internet. I then used an old backup from that external drive, transferring everything from my most recent backup in 2014.
Then I noticed that iTunes was very slow/unresponsive at certain moments (like freezing when I would try to scroll down with the trackpad. There was a lag when in FireFox sometimes, as well. In the App Store, the newest OSX update is not compatible, apparently.
When I first ordered this laptop, I paid extra for the most possible RAM. I know the RAM should handle whatever I may be doing. Yet I'm not sure what I can do to speed this thing up. There is so much free space on the hard drive. Does anyone have any feedback for me on this? I'm in uncharted waters. Thanks!
Is this a good question?