Hard drive is clicking at start up sometimes and when I come back to my Mac after it goes to sleep, sometimes I can't get a login screen. I have to manually reboot at times.
OS 10.9.5 Mavericks
Processor 2.66 GHz Intel Core I5
Memory 4 GB 1067 MHz DDR3
I'm thinking hard drive failure but can't get to the hardware diagnostics at start up.
Any help greatly appreciated.
Mark
Mark,
Your machine will not run Apple Diagnostics per Using Apple Diagnostics - Apple Support, please carefully read and then use the correct tool which is Apple Hardware Test.
Is there anything in the folder /System/Library/CoreServices/.diagnostics
If you have the Apple Diagnostics installed there should be two folders and a diags.efi file I think - the names of the folders depends on your hardware. If you don't have the Apple Diagnostics you MIGHT find a copy at https://github.com/upekkha/AppleHardwareTest (not all systems but many)
Good luck
Thanks rkauffmann87. I did try to use AHT.
Dot.com was correct. The diagnostic file is not on my iMac.
Thanks to both of you. I'll see if I can locate a copy or drag the unit into an Apple store.
In order to run AHT you need the original DVDs that shipped with the computer, if you don't have those then I would take the machine to an AASP. Due to it's age I think most Apple Stores will refuse to work on it. If you need to find an AASP in your area please click AASP Locator to begin looking.
Imac diagnostics will not start in Mavericks
