2010 imac i7 hard drive spinning continuously
A couple of years ago, my imac was overloaded on it's circuit. The imac was under warranty and they "fixed" it, but it took them a week and they had such a hard time that they almost replaced the machine.
Now, after pretty light use for the last couple of years, the machine starts very slowly and the hard drive spins much too much.
I have run onyx and it says that there aren't any errors with the drive.
I certainly could have the machine upgraded with an SSD, but I am concerned that the hard drive isn't the issue.
Any ideas? I am running the latest os.
Considering an upgrade, but hesitant to sell this machine.
iMac, OS X Yosemite (10.10.2), i7 machine squirrel cage hard drive