Morning Mac experts.
Can you help diagnose the problem with my 2009 27inch iMac (apart from its age).
On startup the Apple logo appears along with the progress bar, progress bar fills (very slowly) all the way to the end and then nothing else happens.
I’ve tried starting it up with Command-R held down and also Command-alt-P-R held down, no change to the above.
I’ve unplugged all of the USBs, external hard drive etc.
The above problem came to light last night after watching something on apple tv streamed from iTunes on the iMac. On returning to the iMac the screen was black, although illuminated, but the iMac was unresponsive. I held down the power button to switch it off and when powering it back again the above problem arose.
Any ideas?
Many thanks in advance for all of your help / comments / etc.