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Since yesterday night my MacBook Pro with Lion OS X starts twice…
When tuning on my Mac the machine starts normal the gray wheel spins - nevertheless after a short while the Mac restarts (note: the computer has still been showing the gray startup screen with the Apple logo). When the Mac made the restart the machine starts normal and the usual logon screen appears.
What happened… and what to do..?
MacBook Pro, N/A
I think you need either to upgrade the CPU (remove the logic board and install a new cpu) or get a new machine, or reformat the hard drive with one single partition and start from the beginning.
I hope not..
Before changing hardware, try resetting your SMC and PRAM.
Power off machine.
Press and hold SHIFT-CONTROL-OPTION and the power button for 10 seconds; then release.
Power on.
If the above didn't help, do the PRAM reset next.
Power off machine.
Power on machine and immediately press OPTION-COMMAND-P-R (while screen is black and no startup chime) and keep them pressed until you hear the 2nd start up chime; then release and let system boot.
Well, it worked for me. I did got a new cpu and some other parts changed/replaced on the logic board. I did it myself and it was lots of fun too having the entire machine disassembled while replacing and adding some new parts. For me is just a hobby to have the logic board modified. Lion works great and also I don't have any compatibility issues anymore.
Thx. a lot it worked - I also disabled the FileVault, now everything seems to be normal again.
Excellent. Keep those two resets in your back pocket. 🙂
MacBook Pro with Lion OS X starts twice… why?
