HT1366 My Mac book will not turn on

My Mac book will not turn on no matter what I do help

This is might help:
http://www.youtube.com/watch?v=JwCdgwGHFm8
I had given up on finding a solution until i found your video. It's just a miracle!!!
- macbook pro mid 2010
- reason for the problem: i believe because i removed the battery connection from the motherboard without shut down the system.
macbook pro does not work power on

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My Mac book will not turn on? It charged all night and has never had a problem?

My MacBook will not turn on? Plugged in or without power cord attached. Charged all night. No previous problems?

Ok. Think I fixed it. I took the battery out for 10 seconds, reinstalled it and now it's up and running.

My buddy tried to help me install windows 8 on my new mac book and all he did was put the disc in and now it will not come out and my mac book will not turn off

I cannot get the windows 8 disc out of my mac book pro

Force eject a stuck cd/dvd
First try the normal methods to remove the disc. Drag its icon to the Trash can in the Dock or select 'Eject' from the File menu.
If you are running a virtual machine, e.g. VMFusion, ensure that the CD is disconnected from the virtual machine. This will sometimes allow the CD to now show up in Mac OS X.
Shut down the computer and start up whilst holding down the mouse button. This may take some time, but keep your finger on the mouse button right up until the disc comes out or the log-in screen has appeared.
If you have Toast Titanium installed on your computer, choose EJECT DISC from the menubar.
Sometimes you can successfully use the eject disc button in iTunes even if the disc is not visible to the Finder
Open Disc utility and choose the disc you wish to eject in the left-hand pane, then click on the Eject button.
Some Macintoshes have a paperclip hole that you can insert a straightened paperclip into, manually triggering the eject mechanism.
Open Terminal and type "drutil tray eject" to eject the disc/tray, and "drutil tray close" to close the tray.
If your computer has an eject button on the keyboard, restart the computer holding down the Option key. When the startup disk selection screen appears, let go of the option key and press the keyboard's eject button.
Source: http://guides.macrumors.com/Force_Eject_a_Stuck_CD_or_DVD

HT4628 My Mac book will not turn on after I restarted it, in a new wifi area??

Help

Troubleshooting: My computer won't turn on
http://support.apple.com/kb/TS1367
Things to Do If Your MacBook Does Not Turn On
http://news.softpedia.com/news/Things-to-Do-if-Your-MacBook-Does-Not-Turn-On-133 615.shtml

I'm trying to downgrade my icloud storage; however, my MAC book will not upgrade pass 10.6.8 and I don't have my iphone anymore. If there another way for me to do this?

I'm trying to downgrade my icloud storage; however, my MAC book will not upgrade pass 10.6.8 and I don't have my iphone anymore. If there another way for me to do this? I've tried everything I can find online and of course my coverage has expired and can't call the support team.

Hello Lara,
have you already called Apple and explained your current situation, because I don't see a way to downgrade your storage plan with a Mac only running Snow Leopard and without a iOS device running at least iOS 5.
Best regards.

16 mo young Mac Pro will not turn on. Dead. Why. No problems ever! Installed Yosemite and did not boot up after. Did that kill it? To young to die. What

16 mo young Mac Pro will not turn on. Dead. Why. No problems ever! Installed Yosemite and did not boot up after. Did that kill it? To young to die. What happened?what do I do now??????? Help!

Note that you don't have a Mac Pro as stated. Your profile says you have a MacBook Pro. Please clarify as they are entirely different computers. If nothing below works for you, then make a Genius Appointment and take it in for service.
Try these in order testing your system after each to see if it's back to normal:
1. a. Resetting your Mac's PRAM and NVRAM
    b. Intel-based Macs: Resetting the System Management Controller (SMC)
2. Restart the computer in Safe Mode, then restart again, normally. If this doesn't help, then:
     Boot to the Recovery HD: Restart the computer and after the chime press and hold down the
     COMMAND and R keys until the Utilities 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.
3. Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the Utilities 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. Select Restart from the Apple menu.
4. Reinstall Yosemite: Reboot from the Recovery HD. Select Reinstall OS X from the Utilities menu, 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.

HT1338 White Mac book will not start up just shows gray screen with apple logo

White Mac book will not boot up gray screen only

There are some recovery steps for this condition outlined in the below article.
Mac OS X: Gray screen appears during startup

My Power Mac G5 Will Not Turn ON

My Power Mac G5 will not turn on. WOrked fine, then I went away for 7 weeks and now it doesnt turn on. Power/cord all fine. What can I do?
Thanks.

Same thing happened to my G5 dual (late 2004 model). Just did a quick search to find out "power supply unit failure" is most likely the cause.
Here are some useful links:
This guy replaced the PSU and documented the process:
http://damntechnology.blogspot.com/2009/02/rebuilding-powermac-g5-power-supply.h tml
Taking out the heat sinks to get to the PSU is a challenge. This link shows how:
http://forums.techpowerup.com/showthread.php?p=1476640#post1476640
This repair shop in Fremont CA seems to have pretty reasonable price to do the repair:
http://www.dttservice.com/powermacg5.html
I have owned many Macs for the last 15 years. This is my first bad experience with Apple's product.

Replaced Optical Drive now Mac book will not boot up

I bought a second hand Mac Book Pro A1150 model. It did not have an optical drive so I bought one, installed it and now my Mac Book will not boot up. When I take the drive out the Mac Book boots up fine. I was told that the optical drive although used was tested and work when it was shipped out. I'm a little new to Macs but not new to working on computers. Is it common for a possible defective optical drive to casue a Mac Book pr to not boot up or does this sound like an issue with the optical drive cable, or possibly the logic board?

That is true. I cannot think of any way to test the Optical Drive without swapping it into a known correctly operating MBP.
A thought which probably may not be an issue. When I installed an Optical Drive in my old (2006) MBP, I remember seeing in the instruction manual an item called a grounding pad (which looked like a tiny steel brillo pad with out soap) which was missing in mine. The MBP worked and I essentially ignored it. Perhaps that may not be case with your situation.
My thoughts are that the Optical Drive is malfunctioning and the cause of your problem. Perhaps you should consider getting a new replacement from OWC. But that entails a $100 risk with no guarantees of success.
Ciao.

My mac book will not start at all

Suddenly my mac book pro will not turn off. first it started with the computer cutting off rather than going to sleeep then it started cutting off while I was using it. I became worried that there was a problem and went to back up the hard drive on an external hard drive but suddenly the computer would not start at all. before that happened i would get the gray screen with the dial and a bar underneath. Help!

See if these support articles help:
http://support.apple.com/kb/TS1587
http://support.apple.com/kb/TS1367
Ciao.

My Macbook book will not turn on!

My 2010 Macbook will not turn on- there is absolutely no activity/noise when I press the power button and attempting to reset the SMC has been unsuccessful.It is a realtively new computer and still under applecare however I am out of the country on business and without an apple store! Any suggestions?

Buy a new charger.

I am in mavericks disk utility recovery mode as my mac book will not boot up & stays only on the grey apple screen. When I verify the disk I get open error5 :input /output error on Syst stuck on 1 minute pouring out over 50 error messages & still counting

I am in Mavericks disk utility recovery mode as my mac book pro will not boot up & stays on the Apple grey screen . When I verify disk permissions I get
Open error 5:"input/ output error" on syst with over 50 of this messages & still counting . Disk Utility says 1 minute
But this has been going on for over 10 mins .
I can not verify disk or repair disk .
I have tried to reinstall mavericks operating system but it says my hard drive is locked which is very strange .
Does anyone know what is going on here ?
My system looks like it has been totally corrupted . Thanks Andrew

Could be. The "lock" isn't actually looking for a password.
WARNING: This will completely erase the ENTIRE hard drive.
What you would need to do is boot to recovery > disk utility > select the MAIN drive on the left side > partition > change partition layout from CURRENT to 1 PARTITION > ensure on the right side it says Format : Mac OSX Extended (Journaled) then push APPLY.
Then if it will allow us, close the windows until you see the 4 options popup again and select "Reinstall Mac OS X" select the Mac HD and you should be good to go!

My mail won't quit and now my mac book will not shut down or restart ANY IDEAS

MY MAIL WONT OPEN AND IT WILL NOT QUIT SO NOW MY MAC BOOK PRO IS STUCK IT WONT REBOOT OR SHUT DOWN ANY IDEAS

Check this location:
~/Library/Mail/Bundles
If anything in there place them in
a folder named "Bundles Disabled"
(create one).
Try quitting Mail.
If it quits OK then something in that folder
is causing problems.
Thanks ... Ken

My mac book will not power off, none of the function under the apple respond?

Any body know how I can turn off the computer from this state - the menu under the apple is not responding and so I cannot "shut down" my mac book pro?

Thank you, that worked just fine...
Regards

Mac book will not boot up,only grey screen with ? on it,Why?

Why won't my Mac book boot up,start up only grey screen with ? showing?

That folder with the question mark icon means that the MacBook can't find the boot directory. That can either mean it can't find the hard drive or the Operating System data on the hard drive is somehow corrupted.
With 10.4, 10.5 or 10.6 put your install DVD into the optical drive (CD/DVD drive) and reboot. Be sure to either use the disc that came with your Mac, or, if you installed a later Mac OS X version from disc, use the newer disc. As soon as you hear the boot chime, hold down the "c" key on your keyboard (or the Option Key until the Install Disk shows up) until the apple shows up. That will force your MacBook to boot from the install DVD in the optical drive.
Or if you are running 10.7 Lion, 10.8 Mountain Lion or 10.9 Mavericks, boot from the recovery partition (Command +R on boot) and use Disk Utility to repair your OS 10.7, 10.8 or 10.9 partition.
When it does start up, you'll see a panel asking you to choose your language. Choose your language and press the Return key on your keyboard once. It will then present you with an Installation window. Completely ignore this window and click on Utilities in the top menu and scroll down to Disk Utility and click it. When it comes up is your Hard Drive in the list on the left?
If it is, then click on the Mac OS partition of your hard drive in the left hand list. Then select the First Aid Tab and run Repair Disk. The Repair Disk button won't be available until you've clicked on the Mac OS partition on your hard drive. If that repairs any problems run it again until the green OK appears and then run Repair Permissions. After repairing use Startup Disk from the same menu to choose your hard drive for restarting from your hard drive.
If your hard drive isn’t recognized in Disk Utility then your hard drive is probably dead.

HT1366 My Mac book will not turn on

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