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My Mac turns on but it gets stuck on the white screen upon startup after the chime. I have OS X 10.7.5

I have tried many things unsuccessfully like:

CommandR: Boot to OS X Recovery Mode => The window does not pop out.

Option: Access Mac Startup Manager => When I choose the Recovery disk, again it goes to white screen.

Option: Access Mac Startup Manager => Again it goes to white screen.

I reset CommandOptionPR: Reset PRAM => with no luck

I reset SMC, disconnected the battery cable and held the button for 5 seconds => No luck

Used CommandS: Single User Mode => Type fsck –fy and press Return

I typed /sbin/mount -uw /:

hfs: Removed 2 orphaned  / unlined files and 0 directories

I tried:

touch /private/var/db/.AppleSetupDone
exit

=> This didn't work either

When I connected in Target Mode T via Thunderbolt cable to another Mac => I was able to scan entire disk drive and fixed any errors on disk => but now still unsuccessful with boot up.

When I was in Verbose Mode I noticed the following line:

SMC: :smcInitHelper ERROR: MMIO regMap == NULL - fall back to old SMC mode

BootCacheControl: Unable to open /var/db/BootCaches.playlist: 2 no such file or directory 

Do you have any recommendations what I should try next?

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Wow, it looks like you did almost everything already. What I have left for you are reinstalling your OS X and Reset PRAM.

  • Yes I did PRAM => command-option-p-r with no luck either :( – Ziggy Mar 24 '16 at 18:59
  • How would I reinstall OS X since when I am in Alt/Option Access Mac Startup Manager => My window gets stuck on the white screen and does not move ? Do you think would it be good to format drive through Target Disk Mode and then to try install using USB Stick with installation files ? Any ideas? Thanks – Ziggy Mar 24 '16 at 19:13
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Hold Command + Option + R during boot. It will go to Internet Recovery mode, it will download original Mac OS X that came with your Macbook and allows you to remove your partitions using Disk Utility and install a new Mac OS X on it.

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