-2003f

[Ikbal]

Hello,

Please I wanna ask you if you can help me to resolve this issue.
I have make a handling to downgrade from Yosemite OS to Mavericks OS.
After this, my Mac cannot start up, it displays a folder with question mark.
I've tried to boot with (cmd + R) but I got this strange error "-2003F"

Thanks in advance.
Best regards,

 

[pascalformac]

I hope you noticed it's a forum in french
And there are many good mac forums in english
including Apple and its own forum
https://discussions.apple.com