Macbook Pro fails to boot up! URGENT!

Dear all,
I am in urgent need of some help, today while i was booting my Macbook Pro up it wouldn't go past the Apple logo, i tried to repair the disc with Disc Utility but it won't let me as its greyed out?
What can i do i need my files back!
Lyon

If you can boot from your install disc, navigate to the Disk Utility on it and try to repair your internal hard drive that way. If you are booted from your internal hard drive, you cannot repair it with Disk Utility--it will always be grayed out.
Good luck!

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MacBook Pro failing to boot up despite disk utility repair and PRAM

Problem: MBP frozen on boot up screen with Apple logo and turning gear (which freezes after a while aswell)
Solutions attempted: disk repair via custom recovery- disk utility, PRAM
Device: MacBook Pro 15" (early 2010) running 10.9
Additional info-
Never had any issue with the device and this seems to have happened all of a sudden. Installed an SSD a few months ago, and just realised the ssd did not have a recovery partition. However I connected my older hardrive via USB to access recovery which seemed to work fine.
NOTE: for the past few weeks, every now and then I was unable to power the device off and whenever this occurred, there seemed to be a few bugs (ie unable to empty thrash-error 50 and enable to increase/decrease volume/screen brightness). However, holding the power button and restarting it seemed to have fixed it.
Had the same issue but this time around MBP failed to boot up.
Any possible suggestions?

Ranban wrote:
Are you suggesting reinstalling the os?
No.
Furthermore, is there a way to keep the data intact using this method? Or retrieve it at the least?
Repairing a disk should have no affect on the data, nor would an OSX installation. However if the data has value, there always should be a backup, preferably two.
In your original post you said "attempted: disk repair via custom recovery- disk utility". The term 'custom recovery' to me is alien and thus confusing.
What I am suggesting is a repair of the HDD using the original installation disk, not an OSX installation.
You insert the disk holding down the C key at startup. Proceed with the process until you see on the top of the display a menu bar. Select UTILITIES and from the drop down menu select Disk Utility. Then select Disk Utility>First Aid and then run Verify and repair. Exit from the installation process.
That way I know that the attempted repair was properly executed. You may have in essence done that, but there is an element of doubt in my mind.
Ciao.

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After Restarting My Macbook Pro 13" 2012 it repeatedly fails to boot up to Mac OSX but instead to OSX utilities. I tried to reinstall Mountain lion but it shows me that Macintosh HD is locked and when erasing it , it tells me couldn't umamount Disc. Any solution!!! Thank you

Found a solution. As expected, I needed to restore the firmware. However by just downloading the firmware update, OSX didn't want to write the firmware as it was already up-to-date. OSX has no way to know up-to-date but defective.
Found this thread:
https://bugs.launchpad.net/ubuntu-release-notes/+bug/774089
which lead to
http://pubmem.wordpress.com/2011/04/09/flash-efi-firmware-update-manually-on-a-m acbook-51/
that explains how to FORCE a firmware to be written.
I had to download this free software
http://www.macupdate.com/app/mac/16357/unpkg
to unpack the EFI udpate downloaded at
http://support.apple.com/kb/ht1237
I would say that a good command line knowledge is needed to process the above steps.
Hopefully I was able to find a solution before admitting that the logic board was defective and pay the 600$ for its replacement, as instructed by the genius at the Apple store. They are not allowed to process firmware restoration, but they should at least suggest it before proposing an expensive logic board replacement.
Good luck.

MacBook Pro fails to boot after failing to install Leopard

I have a Macbook pro G4 with tiger 4.11 and I tried to upgrade to Snow Leopard. The new system did not install "not compatible " and then it crashed. I tried to reboot but it won't do anything. I put the old installation disk and press "C" and it tried to boot up up and then just shuts off. I did the same with the four fingers: command, shift option, delete with the cd installation in and it will still not boot up. any ideas??

Hi Elaine, and a warm welcome to the forums!
Do you have access to another Mac with Firewire?
If so see if it boots into Target mode...
http://docs.info.apple.com/article.html?artnum=58583
To try to repair the Hard Drive.

Macbook Pro fails to boot after any OS update.

Hi, I've been a PC user all my life so please be patient!
I have a mid 2010 MBP running 10.6.3 with Win7 on a boot camp partition. I have read and followed the instructions regarding boot issues from many sources on these forums but nothing so far has solved my problem.
I can install anything via software update as long as it isnt an OS update. Any OS update installs fine but the MBP will not reboot afterwards; I get an endless spinner. I cant boot into safe mode either, endless spinner again after the progress bar dissappears.
I have verified and repaired the disk in single user mode and via the disk utilities tool after booting into the install DVD, I have repaired permissions I have tried just about every instruction I could find, I have read posts where people are talking about replacing ACPIPPlatform.kext and IOPCIFamily.kext but I'm not sure this applies to me as they seem to be saying to lift those files from 10.6.6 / 10.6.7 and I cant event get to 10.6.4.
Just to be clear, I cannot update to anything above 10.6.3. I have tried combo and single updates for every patch version from 10.6.4 up to 10.6.8 and the MBP will not reboot after any of the OS updates. The only way I can get the machine to boot again is to wipe the Mac partition and re-install 10.6.3. So, am I doomed to be stuck on 10.6.3 forever?
To add insult to injury, of course Windows 7 works perfectly
I have no obvious HD issues, once I reinstall 10.6.3 everything works perfectly.
It did cross my mind that the only thing I haven't tried is to strip the win partition off completely and put the MBP back to pure mac and see if the updates work then but thats a lot of hassle (its a dev machine) so I thought I'd ask if any of you fine people might be able to help me out before I go for the nuclear option.
Thanks.

Put a bootable backup/clone of your 10.6.3 volume onto an ext FWHD using something like Carbon Copy Cloner or SuperDuper!, boot from it, and try updating to 10.l6.8. If that works, then finish updating everything, and reverse the process. If not, then, try the nuclear option. I don't do windoze, so you'll have to figure out to back that stuff up before proceeding.

MacBook Pro won't boot, need urgent help.

Okay, let's get the full back story on the computer. I bought it in March 2007, I had a strange light column on my display so I took it into Apple in October to get it fixed along with an issue I was having with AirPort Express, so the computer comes back and they replaced just about everything logic board, display, keyboard / top case of the laptop.. the only thing I don't think they replaced was the hard drive and the bottom part of the case.
March 2008 rolls by and my AppleCare expires. April comes and my computer begins doing this thing where 6-8 hours of use it just "freezes" the mouse still moves and you can still click for a few moments but then it just goes stops doing everything except mouse movement, try to reboot and it makes the chime and just shows the white screen and refuses to work the rest of the day, the next day it always does the same thing. Then the time became shorter, 4 hours, 2 hours, 30 minutes. I was at school at the time and didn't care to mess with it so I just stored it away.
A month later I come back, turn it back on boots up perfectly within 30 seconds and works fine for an hour then repeats the previous crash like symptoms. I ask my computer friends and they suggest it's a dying hard drive - so I send that in to get replaced and pay out of my pocket. No luck. Then my friend points out that while it won't actually boot to CD if you hold "C" on boot up, if there isn't a CD there it detects that and shows the correct error... meaning the CD app just isn't loading on the RAM. Fine... I paid for a new RAM stick. Boots up, immediately crashes.
Boot command results:
Flash P-RAM: works and sometimes allows boot.
cmd-S: never works
cmd-V: never works
C: worked right after I replaced the harddrive, hasn't worked since.
T: starts in target disk mode, don't have a second computer to see if drive is browsable.
Any ideas? Is it the Logic Board? Will Apple cover it since they recently replaced it or no? How much will it cost to get a new one?

1) I already said that and I'm not complaining that it's Apple's fault, I'm trying to fix it so I can have a working computer.
2) I'll trust people that work in IT over the pompous "omg-i-got-the-job-so-all-my-friends-will-think-im-in-the-know-on-the-iphone" high schoolers Apple hires at the local Apple store. One told me that Firefox wasn't an approved web browser when I last took it in because the Airport Express card was crap. Hence why I'm asking here where people have actually seen this problem before and recognize the symptoms instead of some kid to read from a script of troubleshooting and then charge me $120 to send it to a tech and get it checked out.
I took it to ProMac my local Apple Authorized Service Provider (AASP)of people who have been working with Macs for the last 15 years, and for $50 they're going to look at it and tell me what they think tomorrow, I'll post the results for anyone else having similar issues.

How do I uninstall Yosemite please ? Since I upgraded my 2011 MacBook Pro will not boot up

My 2011 MacBook Pro will not boot up following my upgrade to Yosemite. How do I uninstall or downgrade back to the previous version of OS please ?

You can't downgrade or uninstall unless you first erase the drive. Try the following:
Reinstalling OS X Without Erasing the Drive
Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu.
Reinstall OS X: Select Reinstall OS X and click on the Continue button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.
Also see:
Reinstall OS X Without Erasing the Drive
Choose the version you have installed now:
OS X Yosemite- Reinstall OS X
Note: You will need an active Internet connection. I suggest using Ethernet
if possible because it is three times faster than wireless.

HT4718 I recently upgrade my OS and now my MacBook Pro will not boot up

I recently upgrade my OS and now my MacBook Pro will not boot up

Reinstall Lion, Mountain Lion, or Mavericks without erasing drive
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported then click on the Repair Permissions button. When the process is completed, then quit DU and return to the main menu. Select Restart from the Apple menu.
Reinstall Mountain Lion or Mavericks
OS X Mavericks- Reinstall OS X
OS X Mountain Lion- Reinstall OS X
Note: You will need an active Internet connection. I suggest using Ethernet
if possible because it is three times faster than wireless.

My Macbook Pro will not boot up. I can hear the sound that it has started and then goes into an infinite loop.

My Macbook Pro will not boot up. I can hear the sound that it has started and then it goes into an infinite loop.

What model MBP and which version of OS X? Sounds as if the hard drive may have failed. If you have an installation disc, try booting with it. If your machine came with Lion or Mountain Lion, try booting to the Recovery partition - Command and R keys held down while booting.
Clinton

MacBook Pro won't boot after 10.6.8 update.

I completely erased my hard drive, reinstalled Snow Leopard and updated to 10.6.7. I then performed an Apple Hardware Test and verified the disk using disk utility. Both tests were successful. I then updated to 10.6.8 using the combo update and restarted my MacBook Pro. The boot process ran fine until the system locked up on the bright blue screen. No peripherals were connected to the laptop during this process. I powered the laptop down using the power button and turned it on again. This time, I entered verbose mode. The last line of text that I see before the screen turns black is "[ PCI configuration begin ]". Can anyone assist me with this issue?
My System Profile is as follows.
Hardware Overview:
Model Name:          MacBook Pro
Model Identifier:          MacBookPro3,1
Processor Name:          Intel Core 2 Duo
Processor Speed:          2.4 GHz
Number Of Processors:          1
Total Number Of Cores:          2
L2 Cache:          4 MB
Memory:          3 GB
Bus Speed:          800 MHz
Boot ROM Version:          MBP31.0070.B07
SMC Version (system):          1.16f11
Serial Number (system):          System Serial#
Hardware UUID:          00000000-0000-1000-8000-001B639863A4
Sudden Motion Sensor:
State:          Enabled

Might be time to replace the PRAM battery. That's not the normally accessible battery, but it is one that often fails after 4 years.

Macbook PRo will not boot, MagSafe adaptor light does not work !

Okay... so i have this issue with my MBP where it will not power up.
The light on the magsafe does not show up at all when connected to the MBP. I have tried another magsafe but failed. I have not tried another battery so im not sure if that is wheret the fault lies.
Ive tried the SMC reset holding the power button down for long, but still no result. However, i left the MBP disconnected from the magsafe and went out for the whole day. Came back, connected the magsafe and thought id try again. I held the power button for 10 seconds and the MBP started booting. It wasnt the normal boot im not sure if it was performing some sort of safe boot, but it was doing something, the screen turned transparent white, restarted and i could finally log in. The battery was very low so i left it on charge with magsafe.
One thing i have noticed is that sometimes i wont get the light showing on the magsafe but it may still be charging at that point.
This morning i wake up and its the same issue all over again. It must have stopped charging or something as i left the MBP on with magsafe connected. Now it will not turn on no matter what i do.
If i tilt the magsafe connector at an angle i can see a dim green light but then id have to hold it in that place to see that light.
Please advise on what i should do next. Excuse the long story !

Hi s.cheslik,
It seems your MacBook Pro will not boot properly and it displaying an error message. Based on the information you have provided, it appears your MacBook Pro needs to be serviced. The following link should help you get started with the process and has links with additional information on topics such as warranty and service pricing, battery replacement, and express replacement service.
Apple - Support - Service Answer Center
Thank you for contributing to Apple Support Communities.
Take care,
Bobby_D

17 MacBook Pro is not booting up. Won't get passed grey screen with Apple wheel spinning below.

17 MacBook Pro is not booting up. Won't get passed grey screen with Apple wheel spinning below.

You may be having a hardware problem that you cannot resolve on your own. Nevertheless...
...hold down the command and R keys whilst booting to try to get to your Recovery partition. If you can, use Disk Utility to try to Verify your boot drive (usually named "Macintosh HD" unless you've renamed it). If the verification fails, try to repair your hard drive. If everything appears to be OK, restart.
If you can't get into your Recovery partition, your problem is likely hardware related. If so, keep your appointment and see what the Apple techs have to say.
Clinton

HT5885 My iphoto app on my macbook pro failed now all photos have been deleted

My iphoto app on my macbook pro failed and read that it "needed to re-build" I let it do so, and mid way "re-building" it failed and all of my photos vanished. They are not in any other files, but seems like they are completely deleted can anyone help me.

With the amount of information you've provided it's impossible to offer a potential solution. We can't see your computer so we need to know the details of your problem and setup, i.e.:
what version of iPhoto are you using?
what system version are you running?
what makes you think they are deleted?
what do you see when iPhoto opens?
what fixes have you tried?
where is your library located?
did you apply any updates or upgrades just prior to the problem occurring?
are you running a "managed" or "referenced" library?
what type of Mac?
how much free space on your boot drive?
OT

HT201295 Late 2011 Macbook Pro refuses to boot. SMC reset doesn't work

Late 2011 Macbook Pro refuses to boot. SMC reset does nothing. Have tried bypassing SMC (nothing).
Magsafe light glows very very faintly (barely visible in a room with lights on).
Have tried reseating the battery connector. Battery indicator status button illuminates no LEDS (despite it being charged before failing).
The mac didn't get wet. Was using a non apple USB cable at the time to tether/charge iphone. Computer just dead after working fine.
Any ideas anyone. Logic board?
Many thanks and best wishes
Jamie

Is it a 15" or 17" MBP? There have been logic board issues with that model.
https://www.ifixit.com/Device/MacBook_Pro
For all models.
If it's a 13" take the bottom off and disconnect the battery:
https://www.ifixit.com/Guide/MacBook+Pro+13-Inch+Unibody+Late+2011+Battery+Repla cement/7649
So only do this through step #3!
Wait 10 seconds. Push the power button for 5 seconds. Wait 10 seconds. Reconnect the battery. Put the bottom back on don't screw it on just yet. Tape it temporarily in place and try to start it
Even if it's a 15" or 17" try this anyway. Usually when graphics on the logic board fails there will have been anomalies beforehand.

My Mid 2010 MacBook Pro will not boot

My Mid 2010 MacBook Pro will not boot regularly, in safe mode, in recovery mode or from original OS DVD. Is this the logic board?
I've tried resetting the SMC and pram numerous times and even tried switching out hdd's to try and do a clean install on a new hdd.
If I attempt to boot regularly or from recovery drive the grey apple logo appears for a period before the screen goes black and the power LED operates as though in 'sleep' mode. I'm unable to wake it from this state and the same applies to booting in safe mode.
When attempting to boot from the OS DVD that was originally packed with the computer it just freezes on the language select option, this occurs with the other hdd's I have attempted to use.
Any other suggestions to get it working? I fear the logic board has gone and that the repair won't be worth the money.
Thank you in advance.

Hi JRC8.8,
It sounds like you have been on the right track in trying to troubleshoot this issue. You may want to see if your MacBook Pro will boot directly to the Apple Hardware Test, as outlined in the following article:
Apple Support: Using Apple Hardware Test
http://support.apple.com/kb/ht1509
Regards,
- Brenden

Macbook Pro fails to boot up! URGENT!

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