HT3964 my macbook pro will not reboot

my mac book pro was working this morning but will not turn back on . It stays in a reboot loop. I have escaped, held down the start button and unplugged the power cord waited 15 secs, plugged it back in waited 15 secs and then tourned it back on- still no luck.
The batttery can not be removed by me.

#1 SMC and #2 PRAM reset perhaps will work
Step by Step to fix your Mac

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After updating from Lion 10.7.4 to 10.7.5, my MacBook Pro will not reboot. Why? What can I do about it?

After upating from Lion 10.7.4 to 10.7.5, my MacBook Pro will not reboot. Why? What can I do about it?

I ended up having to visit an Apple Store. They claimed that the update must have aggravated an already corrupted hard disk drive. The solution was to wipe my hard disk (fortunately I had recently backed up on Time Machine). The "Genius" also claimed this was the first time he had come across the problem. Although he was clearly able to diagnose it straightaway, and the next person he saw had exactly the same problem with his Mac, and I saw an awful lot of customers queuing up with their Macs and iMacs looking very suspiciously like they all had the same problem! So clearly Apple know what the problem is but as usual treat customers as if they're idiots in order to cover up the problem. But at least the problem is now solved (although having to take at trip out and wait in a queue at an Apple store, and then restoring from backups is a painstaking inconvenience I could well have done without). All I can suggest is that you might as well take it in. None of the "solutions" on the Forum are remotely on the ball, and all Apple "Geniuses" have clearly been told what the problem is and how to fix it. Good luck!

HT3964 My MacBook Pro will not boot up. The screen remains dark although the the comput makes the characteristic start up sound. The sleep light is showing.

MY MacBook Pro will not boot upThe screen is dark, but the sleep light is on and it makes the characteristic start up sound.What is wrong?

There is always the forum for MBP
MacBook Pro
https://discussions.apple.com/community/notebooks/macbook_pro
https://discussions.apple.com/community/mac_os?view=discussions
http://www.apple.com/support/macbookpro

MacBook Pro Will Not Reboot

My MacBook Pro is having trouble restarting. I originally opened the laptop to start working and noticed the comouter was acting strange (reconnecting to Wifi after turning it off, Chrome wasn't loading). I decided to reboot the computer to see if that wouls fix the lagging/behavior. After I turned it off and back on, a message about an unprovoked caller, security agent, and something about apple software. Everytime i clicked ok to get rid of the message it kept reappearing. I stumbled across this post Has unapproved caller on screen securityagent may only be invoked by apple software and followed these directions:
"Start on single user mode: Hit the Command and S keys at start-up
Wait until the writing stops completely
-At the line, type (after root): /sbin/fsck -fy (space after the k)
Hit the ENTER key
wait until it finishes and says "... appears to be OK"
next, type: /sbin/mount -uw / (space after the t and after the w)
Hit the ENTER key
then type: rm -Rf /var/folders/* (space after the m and the f)
Hit the ENTER key
Run FSCK again (I did, just in case, but you may not have to):
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Finally, type REBOOT, hit ENTER and wait until computer starts."
I tried these but it didn't solve the problem. However now whenever I try to boot, a white/grey progress bar appears. When 1/4 of the bar is loaded, some text appears on the left corner of my screen for a bit then it restarts itself and a message appears saying the computer restarted due to some error, then restarts again with the progress bar stopping and words appearing. Its a constant loop unless I manually power it down.
I read about starting it in safe mode, but holding down **** doesn't work for me. I am able to start it in single use mode, sometimes on recovery mode. I'm unsuccessful when holding down Command+Option+P+R. When I booted it in recovery mode I went to the disk utility option and clicked on something along the lines of Automatically Updating Permissions.

This is what worked for me:
Situation: After installing OS X 10.5.6, my mid 2007 MBP began to freeze, and eventually wouldn't reboot normally, nor in safe-mode or from a disk. Also tried resetting SMC and PRAM, still would boot from disk.
Tried fysk, which worked for a while, but eventually the computer wouldn't reboot again.
Connected it to another mac via firewire in target mode and erased all the data (yes I had a time machine back-up), but still wouldn't reboot from disk.
Solution: A friend of mine tried resetting the PRAM again (command, Option P,R) but this time, he continued pressing the start button until the third chime (rather than the second as per apple instruction).
All of a sudden we were able to reboot from disk, reintall the OS X 10.4.9 and then do a regular update to 10.5.6. My MBP has been working fine ever since.
Hope this helps someone.

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Which updates did you install?
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I have a MacBook Pro and I had a USB side drive hooked to it and shut down. When I went to reboot after unplugging usb drive, the Laptop seems to be stuck in sleep mode. The boot up screen does not appear but the light where you open the screen it lit. It also makes a sound to start booting but it never boots. The computer was in great running order before this occurred.

Hi mediahero and Welcome
Try this:
Hold the power button down for 10 seconds, wait a further ten then press and release the power button in the usual way.
Good luck
Adrian

MacBook Pro will not reboot after Security update or boot from disc

I recently downloaded the latest security update and instead of immediately restarting I chose to shut down the system. The next day I booted up and ran into a problem with the start up stalling on the gray screen with the Apple logo and the spinning gears.
After searching through many topics on this issues I have determined that I can likely repair permissions to resolve this issue or try a number of other options. However I can not seem to boot up from the Install disc or in Safe Mode. Booting up holding down the Option key doesn't give me any other option than the hard drive.
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This is what worked for me:
Situation: After installing OS X 10.5.6, my mid 2007 MBP began to freeze, and eventually wouldn't reboot normally, nor in safe-mode or from a disk. Also tried resetting SMC and PRAM, still would boot from disk.
Tried fysk, which worked for a while, but eventually the computer wouldn't reboot again.
Connected it to another mac via firewire in target mode and erased all the data (yes I had a time machine back-up), but still wouldn't reboot from disk.
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Hope this helps someone.

I interrupted a software update and my macbook pro will not boot. I have tried to reboot using the startup disc, I have tried to verify the disc, and repair the disc. It tells me I need to erase and reformat the hard drive then reinstall the operating sys

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There's an old saying. If you don't have a backup disc, then there must be nothing important to backup. That's just lesson #1. Lesson #2 is to never interrupt a software update. Not a good thing.
OK, I'm sure you know this. It just upsets me to read your story, knowing you have a lot of important stuff on your hard drive, and didn't use time machine.
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Good luck.

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My MacBook Pro will not power on. It was charged and then just shut off and power cord does not even light up. How do I fix this?

jpg8,
which model MacBook Pro do you have, and which version of OS X is installed on it?

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Could be many things, we should start with this...
"Try Disk Utility
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2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu at top of the screen. (In Mac OS X 10.4 or later, you must select your language first.)
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http://docs.info.apple.com/article.html?artnum=106214
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My macbook pro will not charge when I am using it.

My macbook pro will not charge when I am using it. My battery will say "charged" then "not charging" and it goes back and fourth. It says "Power Source: Power Adapter". But when I use my pro it will loose the power source then reconnect a second later to it. This problem is getting annoying because I have to stop using my macbook pro to charge it.

Reset SMC.
http://support.apple.com/kb/HT3964
Choose the method for:
"Resetting SMC on portables with a battery you should not remove on your own".
If this does not help, contact Apple.
Best.

Macbook pro will not respond to command r

Macbook pro will not boot up or respond to command r

If the machine is older than October 2011, you will need a firmware to enable the command-R boot. Try booting with the Option key to see if anything is visible.
If not, and you aren't backed up, see this tip:
https://discussions.apple.com/docs/DOC-1689
If you are backed up, but the machine won't turn on, try resetting the SMC:
http://support.apple.com/kb/ht3964
If it won't turn on, but is under 4 years old, try resetting the PRAM:
http://support.apple.com/kb/ht1379
If the Mac has a removable battery (exposed to the outside), try connecting the computer to a known working outlet (testing with another electronic device), and remove the battery before resetting the SMC or PRAM if they didn't work at first.

My MacBook Pro will not eject a DVD following viewing. Help?

My MacBook Pro will not eject a DVD following viewing.   Selecting EJECT
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Five ways to eject a stuck CD or DVD from the optical drive
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1. Restart the computer and after the chime press and hold down the left mouse button until the disc ejects.
2. Press the Eject button on your keyboard.
3. Click on the Eject button in the menubar.
4. Press COMMAND-E.
5. If none of the above work try this: Open the Terminal application in your Utilities folder. At the prompt enter or paste the following:
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If this fails then try this:
     Boot the computer into single-user mode. At the prompt enter the same command as used above.
To restart the computer enter "reboot" at the prompt without quotes.

Mac Pro will not reboot after Bootcamp attempted installation

I have an older quad-core 2009 Mac Pro. I tried to install Bootcamp before realizing that it's not supported. Now the Mac Pro will not reboot.
It starts up fine. It shuts down fine. But it just will not reboot. When I try to reboot, it just clicks like it's trying to boot to a DVD or a drive that's not there (I have since formatted the drive I was using for Bootcamp and use it for Time Machine now).
This is what I have tried:
- PRAM reset
- SMC reset
What could be keeping my Mac Pro from rebooting properly?? Please help. Thank you!!

So you tried with Mac and Windows on same drive?
And you have Recovery partition.
You made a clone with CCC as well and cloned the Recovery
Paragon makes a couple programs to make life easier.
And, Well, Boot Camp works. There are unwritten rules. There is a forum devoted to it.
2009 is not old. Old is pre-2008 due to UEFI / EFI64 and how Windows 64-bit now looks during install.
It did install but the drivers and updates and such might be an issue.
Apple does not support HFS arrays, not just that Windows won't install but to mount, their Apple HFS driver.
You left out so much and maybe your IT didn't include Windows on Mac.
www.apple.com/support/bootcamp
In general pull all your drives during install except that one Windows will be installed on.
Do get video driver from ATI etc yourself
Tell us what version, I assume Windows 8 which works fine other than a few issues - more with MacBook series and iMac or Mac Mini lines.

Have Macbook Pro & 4th gen iPod Touch. Downloaded & installed iOS 4.3.2 yesterday. Upgrade went without a hitch, but now iTunes on My Macbook Pro will not open. I get an error that says "iTunes" Data too new to be used with this version of iTunes.

Have a Macbook Pro and a 4th gen iPod Touch. Downloaded and install iOS 4.3.2 yesterday. Upgrade went without a hitch, but now iTunes on My Macbook Pro will not open. I get an error that says --The file "iTunes Library" cannot be read because it was created by a newer version of iTunes--. I am running iTunes 10.1. I searched for Updates to my MacBook Pro (running 10.6.7), but comes back saying no updates available. WHAT IS GOING ON??

Is your computer still authorized in the Store menu in iTunes?
iTunes Store: About authorization and deauthorization
When I changed to my new MacBookPro I had to authorize it although I used TimeMachine to transfer my settings and data.
Did you try to deselect Wi-Fi syncing and enable it again after that?
iTunes 10.5 and later: Troubleshooting iTunes Wi-Fi syncing
Did you already transfer your purchases and manually started a backup?

HT3964 my macbook pro will not reboot

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