Chosen Solution
I have a friends iMac, when it boots none of the startup key combos work. cmd+r, option, cmd+opt+p+r, shift……….none of the key combos work when I try them, I just boot into osx login screen normally. I tried resetting SMC….. can’t do anything about pram, because the key combo don’t work…keyboard work perfectly, it is an wired apple keyboard..don’t have a firmware password set….So anyone knows how to fix it?
Try using a USB keyboard
