Hi
My MacBook Pro have gradually restarting itself more and more often.
Now it cannot start up. On attempt to startup it beeps 3 short, 3 long and 3 short beeps.
Have tried following without succes:
Reset SMC ****+alt+cmd+power
Reset NVRAM power+alt+cmd+p+r
What is wrong and how do i fixit?
MacBook Pro (13-inch Mid 2010)
MacBook Pro (13-inch Mid 2010), OS X Mavericks (10.9.5)
Hi Perjensen:
This is from the link that both Mende1 and BobTheFisherman posted.
It says that newer computers automatically recover from a corrupted ROM.
Make a Genius Bar appointment: Genius Bar
The evaluation will be FREE.
Kim
See -> About Mac computer startup tones - Apple Support
From what you say, it could either be a RAM or a EFI (firmware) one. You can repair a RAM issue by replacing the defective slot, but a damaged EFI is a much worse issue. Take the Mac to an Apple Store or reseller.
Thank you. It's up and running again, i tried to restart several times, but the error will occur again. I know the pattern.
The Apple Store solution will be a very expensive solution, so I have to see, how far I can go myself.
"3 long tones, 3 short tones, 3 long tones: Indicates EFI ROM corruption is detected and the computer is in EFI ROM recovery mode."
I have the newest EFI versions. If the EFI is corrupted, should I update the firmware (EFI and SMC) from Apple again?
How did the EFI get corrupted?
About EFI and SMC firmware updates for Intel-based Mac computers - Apple Support
MacBook Pro (13'', medio 2010) MacBookPro7,1
EFI Boot ROM-version: MBP71.0039.B0E (EFI 2.5)
SMC-version: 1.62f7 (SMC 1.6)
Your issue is identified here: About Mac computer startup tones - Apple Support
MacBook Pro Beep SOS. Cannot start.
