Hi all.
My iMac 2011 mid 21,5" wont boot properly. When i turn it on after the startup sound the screen stays gray for a good 4.5 minutes. Doesn't respond any keyboard commands. No external Hdd or any other bootable device is connected. After that, the apple logo shows up, and the unit boot correctly. Under the Sys Pref./ startup, is just 1 HDD shows up (Osx 10.8.5) and that is selected. I can't install any EfI or other firmware from the download section for this specific iMac. "This software is not supported on your system.".
Any help??
Thanks.
My iMac 2011 mid 21,5" wont boot properly. When i turn it on after the startup sound the screen stays gray for a good 4.5 minutes. Doesn't respond any keyboard commands. No external Hdd or any other bootable device is connected. After that, the apple logo shows up, and the unit boot correctly. Under the Sys Pref./ startup, is just 1 HDD shows up (Osx 10.8.5) and that is selected. I can't install any EfI or other firmware from the download section for this specific iMac. "This software is not supported on your system.".
Any help??
Thanks.