Mac book bro

When I start it show the dwonloading of something apple then his newspaper logo suddenly no reason

What could be the problem

You get the Apple logo only when it is loaded with the blob first software on the hard disk. If the player answered (isn't Cold Stone-death).

The next major hurdle is the initialization of the file system and mount the boot disk to read files and load up to Mac OS. If you get a bar that takes minutes (rather than in seconds) to progress your player if directory damage and could not be mounted. The minutes are taken to the equivalent of disk utility 'first aid '.

IF the boot drive can be mounted after one pass of the repair, the boot continues.

If this is not the case, your Mac will automatically stop.

So the answer is, you have serious Corruption of directory on the boot drive, and it must be repaired before proceeding. You can hold the R command at startup to get utilities and try to run disk utility and repair.

If repairable, you can proceed. If not, you need a new external drive and install a new copy of Mac OS on it. Or the Genius Bar to your Apple store can do for you. If you have a backup of trust, you can erase the disc instead, but this erases ALL the files and is not a good idea. A new external drive is not very expensive.

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