Kernel panic and now my MacBook Pro won't boot

My MacBook Pro had been acting a little strange for a while - sometimes applications like Final Cut Express and iTunes would "unexpectedly quit" when I tried to open them and wouldn't work until after a restart. Now, the screen went dim and I got the "you need to restart your computer" message. I did, and it worked for a few minutes, and did it again. Now all it does when I turn it on is chimes, shows the Apple logo as if it is going to start up, and then dies. It is the original Core Duo one so it's out of warranty. Is this the logic board? If not is there any hope of it working again?

Kernel panics are usually cause by hardware problems. Disconnect all devices from your computer & check out the following KB Article & User Tip:
http://docs.info.apple.com/article.html?artnum=106805 Mac OS X: "Broken folder" icon, prohibitory sign, or *kernel panic when computer starts*
User Tips: Kernel Panics
!http://i50.tinypic.com/izvwo1.gif!

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I erased my hard drive and now my Macbook pro won't boot

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Are you sure it came with Lion?
Check out the support page for what build shipped with which OS.
PJRS

I was messing around with .kext files in the MacintoshHD and now my MacBook Pro won't start up.

I was messing around with .kext files in the MacintoshHD and moved the system.kext and two others to my desktop and deleted the originals and now the MacBook Pro won't start up. All I get at start up is the apple icon then a bunch of text shows up part of which says Mac OS version: not yet set. then the apple icon turns into the power icon and tells me to turn off the computer. I've tried reinstalling from the install DVD by holding down option when powering on and selecting the install DVD and it just goes to a white screen with the apple icon and stays like that. I didn't have the disk utility on my Mac before this happened because I deleted it to make room on my computer a while ago so I'm not sure if that's why it won't load the install DVD but anyone who knows the solution to this with out going to get it repaired would be greatly appreciated. Thank you!

Never mind my dad just found the original install DVD and that worked. Before I was using an install disc that Apple sent me for another issue I was having, but thanks for replying so quickly and trying to help on this Thanksgiving day!!!

I recently did a full reinstall from my time machine and now my MacBook pro won't back up to the time machine. It starts a full backup ignoring the original back up, can anyone help?

I recently did a full reinstall from my time machine and now my MacBook pro won't back up to the time machine. It starts a full backup ignoring the original back up, can anyone help?

Did you follow the instructions on the page linked below?
OS X Yosemite: Recover your entire system

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
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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.

I was installing mountain lion and now my macbook pro won't start up

I was installing Mountain Lion and i restarted my computer and now it won't boot up.

Reinstalling Lion/Mountain Lion 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 Lion/Mountain Lion: Select Reinstall Lion/Mountain Lion 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.

Enabled Apache and now my MacBook Pro won't start at all

Subject pretty much says it all. I was enabling Apache, php and installing ioncube. Restarted the computer, because I wanted to make sure Apache really was restarting... and now the computer will not come on at all.
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Does it start up in Target Disk Mode? Try holding T while booting up.

I recently updated to Mavericks, and now my macbook pro will not boot

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I left it loading for about 2 hours and it managed to boot up, it then took a further 40 minutes to load after I typed in my password but then I couldn't do anything.
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There's really no telling what's wrong with your machine. A trip to your local Apple Store may be warranted as they have the diagnostic testing equipment to find out if you've a hardware or software problem.
Good luck,
Clinton

My start up disk is full, and now my MacBook pro won't do anything. What do I do now?

I Am trying to move photos to my external but finder won't even open.

You have a corrupted directory which is not recoverable. You will need to erase the drive and reinstall OS X.
Clean Install of Snow Leopard
     1. Boot the computer using the Snow Leopard Installer Disc or the Disc 1 that came
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     3. When the formatting has completed quit DU and return to the installer. Proceed
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Download and install Mac OS X 10.6.8 Update Combo v1.1. From here you can re-download and install Lion from your Purchases page on the App Store.

Software Update Interrupted... now my MacBook Pro won't boot

I'm not really sure what happened. I was installing the 10.5.5 software update, as well as a few other things using Software Update and got to the point when I had to restart my computer. So I tell the computer to restart and then wander off for a minute or two.
When I came back the computer was off, I was gone for barely two minutes, so I know that the updates hadn't installed and I'm assuming something happened to interrupt the install. But now the machine doesn't boot at all.
I get the gray screen with the Apple symbol, and then the computer freezes at as light blue colored screen. Can't use the mouse or anything, not even a "beachball of death" as it were.
I have no idea what to do, I'm using my Windows partition right now. Any suggestions?

Or maybe simply by booting off your MacOS Install Disk and "updating MacOS" (sometimes you can "update" your MacOS with the install CD, if you're on the same version ...
Otherwise you could need to reinstall MacOS (hard but better than a piece of steel ...)

Installed Yosemite...now my MacBook pro won't start up. Keep showing "Kernel Panic!" HELP!

installed Yosemite and now my MacBook pro won't start up. Keeps showing "kernel panic"
PLEASE HELP ME!

If you can't start up and log in in the usual way, try in safe mode.
During startup, you’ll see a progress bar, and then the login screen, which appears even if you normally log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Log in as an administrator to carry out these instructions. If you have only one account, you are the administrator.
☞ If you don't see any reports listed, but you know there was a panic, you may have chosen Diagnostic and Usage Messages from the log list. Choose DIAGNOSTIC AND USAGE INFORMATION instead.
Safe mode is slower than normal, and some things won’t work at all.
Note: If FileVault is enabled in OS X 10.9 or earlier, or if a firmware password is set, or if the startup volume is a software RAID, you can’t start in safe mode.
If you're able to log in, launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Console in the icon grid.
In the Console window, select
DIAGNOSTIC AND USAGE INFORMATION ▹ System Diagnostic Reports
(not Diagnostic and Usage Messages) from the log list on the left. If you don't see that list, select
View ▹ Show Log List
from the menu bar.
There is a disclosure triangle to the left of the list item. If the triangle is pointing to the right, click it so that it points down. You'll see a list of reports. A panic report has a name that begins with "Kernel" and ends in ".panic". Select the most recent one. The contents of the report will appear on the right. Use copy and paste to post the entire contents—the text, not a screenshot.
I know the report is long, maybe several hundred lines. Please post all of it anyway.
In the interest of privacy, I suggest that, before posting, you edit out the “Anonymous UUID,” a long string of letters, numbers, and dashes in the header of the report, if it’s present (it may not be.)
Please don’t post other kinds of diagnostic report.

Macbook Pro won't boot or show partition

I have my macbook pro partitioned with leopard and tiger (for protools) . I also have a copy of leopard on an external hard drive that I boot to occasionally. While on this external drive I had to do a manual shutdown after it froze and now my macbook pro won't show the internal drive partition with leopard on it. It will only boot to the internal partition with tiger on it. Even though I can see the leopard partition on the desktop and access it through tiger it is still not showing up in startup disk. I held the option key during startup and it gave me the choice to choose the leopard partition but after it started to go through booting it would then shut down.
Any suggestions?
I ran disk permissions and repair but its said everything is okay.

I would try Diskwarrior 4.1 and see if that can repair the drive.
btw how did you get Tiger on your Macbook Pro?
My Tiger install DVD will not install on my Macbook pro even though it is a 3.1 version machine.
I need to run Protools as well.

MacBook Pro won't boot up after interruption of update

I interrupted the installation for the OS X Mountain Lion v10.8.2 and now my MacBook Pro will not boot up. Any suggestions besides calling Apple support or going to the store?

Hi,
I am having the same problem with my Macbook Pro. Did you manage to find a solution to this problem?

I've updated to yosemite from Mavericks, but since i can't connect to the internet I used my time machine back up which was march 2013. Now my macbook pro won't start and ends with a prohibited ted sign. Any suggestions pls.

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Install or Reinstall Yosemite, Mavericks, Mountain Lion, or Lion from Scratch
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
How to Clean Install OS X Yosemite
OS X Mavericks- Erase and reinstall OS X
OS X Mountain Lion- Erase and reinstall OS X
OS X Lion- Erase and reinstall Mac OS X
Note: You will need an active Internet connection. I suggest using Ethernet if possible
because it is three times faster than wireless.

HT1338 problems with OS X Lion. I upgraded and now my macbook pro has been crashing...

I am having problems with OS X Lion. I upgraded and now my macbook pro has been crashing... what's going on? and someone please help !!!!

If you have more than one user account, you must be logged in as an administrator to carry out these instructions.
Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Console in the icon grid.
Select the most recent panic log under the heading System Diagnostic Reports on the left. If you don't see that heading, select
View ▹ Show Log List from the menu bar. Post the entire contents of the panic report — the text, please, not a screenshot. In the interest of privacy, I suggest you edit out the “Anonymous UUID,” a long string of letters, numbers, and dashes in the header and body of the report, if it’s present (it may not be.) Please don't post shutdownStall, spin, or hang reports.

Kernel panic and now my MacBook Pro won't boot

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