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Macbook pro 13" crashes while booting.

When i switch the macbook on i hear the chime,then i see apple logo with the wheel spinning and few seconds later it shuts down every time.when i tried single user mode it runs tests and it crashes down after some time.when i run verbose mode it gives me bootcashecontrol:unable to open /var/db/bootcache.playlist: 2 no such file or directory... and it crashes again please help.tried smc reset,nvram reset nothing worked still the same

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  • 59 Answers

Have you tried booting off of your restore disc? During startup you can boot from a CD, DVD, or thumb drive by holding "C" while booting. You can also try starting into recovery system by pressing "R" and "command" keys while booting, but I'd reccommend trying the bootable disc method first. Hope this helps!

Posted on May 03, 2014

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: macbook pro unexpected shut down

After determining the battery health:
http://support.apple.com/kb/HT1519

Then calibrate the the battery:
http://support.apple.com/kb/HT1490


Posted on Apr 22, 2009

  • 1 Answer

SOURCE: Macbook Pro just shuts down

This sometimes happens when you have it plugged in to an electrical socket as well. I have recently been having this problem and I have a brand new battery, so it's likely the logic board. If you're still having the problem, and the monitor image shows weird fragmentation on startup, it's likely to be the logic board that needs to be replaced.

Posted on May 05, 2009

damien729
  • 221 Answers

SOURCE: macbook recognizes dell projector, but not vice versa

Hello,
Your Macbook should automaticaly find the best resolution, if everything was OK. Is there any HDMI input on the dell projector? What projector is it? Is there is an HDMI input, you can use a HDMI to mini DVI cable: better picture and sound than VGA, and will probably solve your problem

Posted on Jun 27, 2009

  • 20 Answers

SOURCE: MacBook won't start up.

If you have your Mac OS X Install disc, insert it into the drive.
Restart the computer and hold down "C" while booting.
Choose your language.
Select "Disk Utility" from the "Utilities" in the menu bar.
Select your Macbook's hard drive in the left sidebar.
Click the "First Aid" tab thats along the top of the viewer window.
Click "Verify Disk" (not verify disk permissions)
If this shows errors click "Repair Disk"
Once completed close the Disk Utility window.
Restart the computer.
If this fails to fix it as well then your next option would most likely be recovering your files from the macbook either by booting into target disk mode (hold down T at startup) and transferring them via a firewire cable, or removing the hard drive and hooking it up to another Mac to get the files. Then do a clean install of Mac OS X using your installation discs.

Posted on Feb 15, 2010

Macs R We
  • 481 Answers

SOURCE: help with my macbook air, it shows only the apple

Power the machine down. Press the power button to turn it on. After you hear the startup chime, press and hold the shift key. This will trigger an extended file system check and a safe boot. Continue holding the shift key down until you see the spinner, then you can release it. If it doesn't boot completely after this, you will have to bring it in to an Apple-certified tech for repair.

Posted on Apr 03, 2010

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MacBook Pro does not start. Gets stuck on the apple logo


Have you tried a PRAM start?
Switch machine off. Restart> when you hear the first Chime, hold down the following four keys at the same time (tricky but can be done) ALT>CMD>P>R. Keep them held down until you hear the second Chime then release.

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If your Mac is running OS X Lion or Mountain Lion, you should have a recovery partition with Disk Utility on it. Restart your Mac while holding down Command-R to boot into this instead of your regular partition. Follow Apple's instructions on how to use Disk Utility to see whether the hard drive is damaged or just corrupted (and potentially corrupted).

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See if you can start your Mac in safe mode:

Shut down your Mac and wait 10 seconds.
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  2. Immediately after you hear the startup tone, hold down the Shift key. You should press the Shift key as soon as possible after you hear the startup tone, but not before.
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If you can boot in safe mode, you have something on board your computer that's interfering with startup. If you've recently installed software, system extensions or 3rd party preference panels (Adobe and Microsoft stuff is notorious), try to disable or de-install it. If you can't get booted in safe mode, you may have a hardware or memory problem that might require technical repair. Repost your progress.

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You may need to reset the PRAM.
Start your computer and hold down the option, command (apple), P and R keys simultaneously until you hear the second chime. Then release.

This will reset the perimeter RAM (PRAM) and may allow your system to start, which it will do immediately if it capable.
If this is not the case and you have already tried removing the RAM and the HD, you may need to have the motherboard tested.

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Restart your mac. As it's restarting/booting up, hold down the command, option, R and P keys simultaneously. As it's booting up and you're holding these keys, you should hear the startup chime, continue to hold the keys down, it will cycle and you'll hear the startup chimes again. Let it go thru this cycle 7 (seven) times before you let up on those keys. Once it's cycled 7 times, let it boot up normally.
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yes this happens. you can try doing this: power down then power up whilst holding down command, option P and R all at the same time. press these after you hear the chime. hold until you hear the chime a second time.

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Dose the apple logo comes and the spin or no ?
if its coming permission issues
if dosent come the apple logo and the spin then please reset the eprom
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Power the machine down. Press the power button to turn it on. After you hear the startup chime, press and hold the shift key. This will trigger an extended file system check and a safe boot. Continue holding the shift key down until you see the spinner, then you can release it. If it doesn't boot completely after this, you will have to bring it in to an Apple-certified tech for repair.

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