Flashing Grey Folder with ?
I have a late 2009 iMac 21.5, I am having the infamous screen of death flashing grey folder with a question mark. It has SSD installed at some point, i’ve ordered a new one just in case and will try to install fresh OS from USB. The problem I have is that It is frozen on the folder screen, neither holding option or option + cmd + R does anything. Any advise, please!