Hi,
i don't really know how this happen but i think my litle brother just wanted to reset the operating system and now, the pc when i turn it on, apears all white and a question mark flashing!!
Please, there's someone that can help me?
Regards
The flashing question mark means that it cannot find an OS to boot. You will need to reinstall OS X.
I'd suggest that you keep your little brother away from your computer from now on 😉
Thanks a lot...i will do it tomorrow. Thanks.