My iMac won’t startup
Start button does not turn on computer, a 2012 iMac.
Have tried unplugging lead, holding down start button for anything from 10 seconds to 5 minutes, unplugging from surge protector or any combination of the above mentioned.
Tomorrow I have an appointment at the Genius Bar - let’s see what they tell me - new power supply, perhaps??
iMac 27″, macOS 10.13