I am somehow unable to restore my iMac from 2011.
Someone gifted me the iMac but had his HDD removed. I thus reinstalled a new HDD.
After the chime I press Option+Command+R and the network restore process starts.
When the bar reaches 100% I see the Apple logo for a few seconds with a spinner underneath it, after that the screen turns white and stays this way. Sometimes when I try to reboot after an attempted network restore the screen even stays black after the chime and nothing happens.
What could cause this behavior?
PS: I would try to boot from a USB-stick but I don't have any other Mac to create a bootable volume.
I don't know if tis helps but the fan is spinning at full speed and the upper left back of the iMac gets pretty hot