iMac not powering on, tried steps, still no power.
iMac is not powering on, I've tried the basic step, with no success. help.
Earlier displays & monitors
Check the power cable on the back of the iMac.
Check/bypass the surge protector, if you are using one.
Try plugging the iMac into a different wall outlet in another room.
If none of the above help, schedule a service appointment at your local Apple Store or AASP.
see > Genius Bar Reservation and Apple Support Options - Apple