Chosen Solution
Hi, I have a imac 2011 model and right after I plugged in my blowdryer cord in the outlet, the cord sparked and all the power turned off. We fixed the power, all of my devices are working except the iMac desktop. I turn on the power button, but the screen itself won’t turn on (I can hear the fan running though… And my power bank is lighting up/recharging). Keep in mind I’m using a windows wireless keyboard with having a ctrl button = windows icon button
Use a wired keyboard, your wireless drivers do not get a chance to load. Then reset the PRAM on boot up. P, R option & command keys and allow to tone three times.
its a long shot but try I different power cable as-well just incase in a situation like this id be trying everything
