iMac will not start

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• iMac will not start. From sound and sometimes Apple, but no further details. How can I get?

  Just got an iMac and it will not start up.  I can get the sound start and, sometimes, the Apple logo, but it stops there.

  Have tried to use 'command-option-P-R' together. Have you tried "D".  Tried "control C".  Are there other possibilities that I could try?

  Install or reinstall OS X from scratch

  Make sure that you have backed up your files because the following procedure will remove all of the hard drive.

  HD recovery start:

  Restart the computer and after the buzzer, press on and hold down the COMMAND and R until the menu screen appears.

  Erase the drive:

  1. select in the main menu disk utility and click on the continue button.

  2. once the charges of THE select your boot volume (usually Macintosh HD) in the

  list on the left. Click on the Erase tab in the main window of THE.

  3. set the type of format Mac OS extended (journaled). If necessary, click

  Security and button all the option data from scratch in a single pass. Click

  the clear button and wait until the process is complete.

  4 leave FROM and return to the main menu.

  Reinstall OS X: Select reinstall OS X and click on the install button.

  Note : You will need an active Internet connection. I suggest to use Ethernet if possible

  because it is three times faster than wireless.

  This should install the version of Mac OS X that you had installed it.

  If this does not work then your hard drive has failed and must be replaced. Please make an appointment at the Apple Store - Genius Bar store and bring it into service. If you are in the United States or is unable to make an appointment in this way, contact your Apple store.

• My iMac will not start past the gray screen

  At startup, the iMac rings and goes to the grey screen where he hangs up and does not progress.

  I tried with the command/R button from Mac, but the utility never appears.

  I tried to start with the SHIFT key down... same thing.

  Is there something I can do?

  Thank you very much!

  Paul,

  My iMac (early 2010) has just started doing the same thing.  Initially, I could start in recovery mode, but download time was 18 hours and time increased.  I stopped the download and downloaded the installation on a USB disk on my MacBookPro in the hopes that I could start the iMac to the USB instead soon and not tomorrow. Now, I can't get the computer to boot on the USB stick or the recovery partition.

  So he can start on the USB key you must hold down the option key when you hear the chimes boot.  Then maybe you can try and have some success.

  If you find something that works to post here, if you think about it!

  Good luck!

• Somewhere, I messed up my permissions, turn off the computer to see if it helped, now will not start at all. The start bar stops a quarter turn along. I tried in SafeMode as well do. I ' on a Yosemite iMac running.

  Somewhere, I messed up my permissions, turn off the computer to see if it helped, now will not start at all. The start bar stops a quarter turn along. I tried in SafeMode as well do. I ' on a Yosemite iMac running. I can't enter to give more details. Can anyone help? There are a load of work due to deliver to the printing press Monday

  Have you tried to boot from the Partition Recovery and repair then the disc from there, using disk utility?

• iMac, 2012, 27″, will not start, not even in safe mode

  IMac my wife, 2012, 27″, El Capitan, will not start, not even in safe mode. The problem started during the installation of Mac Office 365 (2016), although the installation on my machine worked fine.

  The following two photos are sure Mac verbose mode. (Photos are from consecutive boots, that the camera did not focus, but the behavior of the Mac is constant in boots attempts.)

  http://www.jdawiseman.com/2016/20160218_230538_mac_wont_boot.jpg

  http://www.jdawiseman.com/2016/20160218_230059_mac_wont_boot.jpg

  Disc utilities reported an error. Although fsck - fy is not.

  Please, kind of people from the communities of Apple support, what should I try then?

  Thank you.

  Have you tried to boot into recovery mode. Combinations of keys start for Mac - Apple Support

  Select disk utility, then check the disc. Resolve startup issues and perform maintenance on disk with disk utility and fsck - Apple Support

  How much free disk space hard do you?

  What is the error Disk Utility has.

  Kim

• I nned to know the procedure I use to get can Mac 2008 Desk top that will not start. I don't know how to connect two computers, my portable Mac Air 2013 on my desk, now I need to know how get the workstation files in order to appear on my mac air so I can

  Does anyone know how after I connect to my office 2008 Mac (which will not start.) to my computer laptop (2013 Mac Air). What are the steps that I need to know to get the Desktop files is displayed on my mac air so I can copy files to your laptop, especially my Itunes folder.

  Thanks Jerri

  If you can't get the iMac began and ongoing implementation, you will not be able to use the target disk Mode:

  https://support.Apple.com/en-us/HT201462

  Then the option is to take the iMac HARD drive, install it in an enclosed, and connect the HARD drive to the MBA via the USB port.  If the HARD drive is recognized, you can copy the data out of it.

  Ciao.

• Two iMacs does not start after the 10.11.4 update.

  Two iMacs does not start after the 10.11.4 update.  Progress bar starts moving and then text appears on the black screen saying unexpected sigkill to launchd.  He then gets stuck in a loop trying to start.  Tried to reset the SMC and LANDAU.  Without success.  Started in recovery mode and ran disk utility.  Discs said OK.  Chose to reinstall OS X from the list of options in the recovery mode (assuming it would be 10.11.4).)  Installation is finished but still once does not start.  Reinstalled on 10.11.0 successfully from a USB key and downloaded the 10.11.4 combo updater.  Installation seems to work, but once again, the macs will not start.  Same 'unexpected launchd sigkill' error.  A mac is now back working properly with 10.11.3 the other will be shortly.  Is there a problem with the accession?  Our COMPUTER support use Munki to get updates from one day to the next.  Fortunately, we were able to stop it before the other 20 or if Mac had the same problem.

  More information: two bricks iMacs were late 2013 models.  A 21 "and a 27.  We have just updated a test iMac which was a late model 2012 using the 10.11.4 combo updater.

• My iMac does not start correctly. Instead, I just a gray screen. Safe mode starts, it's ok. No problem. So I ask what next step can I try? Thank you very much

  My iMac does not start correctly. Instead, I have a gray white screen. Safe mode starts, it's ok. No problem. But not in safe mode, only grey screen again.  So I ask what next step can I try? Thank you very much and sorry for my bad English.

  Reinstall El Capitan without erasing the drive

  Make sure that you have a current backup before continuing.

  HD recovery start:

  Restart the computer after the ring, press in and hold the COMMAND and R keys until the menu screen to appear.

  Repair

  When the recovery menu appears, select disk utility and press the continue button. Disk utility charges and select Macintosh HD entry indented from the list on the left.  Click the first aid tab in the toolbar... If disk utility reports any errors that have been corrected, then re-run first aid until no errors are reported. Wait until the operation is complete, then quit disk utility and return to the main menu. Select restart from the Apple menu.

  Reinstall OS X: Select reinstall OS X and click on the continue button.

  Note : You will need an active Internet connection. I suggest to use Ethernet if possible because it's three times faster than Wi - Fi and more reliable.

  In the future please post in the appropriate forum. Your question is not related to the developers forum. I will take care of moved it.

• After the update to el Capitan my iMac will not be asleep. I put it to sleep and turn off the mouse and keyboard that goes with it, and 5-10 minutes later, he wakes up on his own. Now, I have to stop it after use and each time only. Major pain

  After the update to el Capitan my iMac will not be asleep. I put it to sleep and turn off the mouse and keyboard that goes with it, and 5-10 minutes later, he wakes up on his own. Now, I have to stop it after use and each time only. The Major pain. Any help would be greatly appreciated.

  Please test after taking each of the steps that you have already tried:

  Step 1

  Take all of the measures suggested in this support article, including those under the title "If the previous steps do not work." It is the starting point for a new effort to solve the problem.

  Note that, as stated in the article, the computer will not sleep, if some sharing services are enabled. In the menu bar, select

   ▹ System Preferences... ▹ Sharing

  Disable all sharing services.

  Step 2

  If sharing music iTunes home sharing is enabled, disable it or quit iTunes. Do the same with third-party applications that have a similar feature.

  Step 3

  Select

   ▹ System Preferences... ▹ Accessibility ▹ Speakable Items: Off

  Step 4

  Select

   ▹ System Preferences... ▹ ▹ Advanced Bluetooth...

  and uncheck the two boxes marked

  Open Bluetooth Setup Assistant at startup if...

  Step 5

  Reset the printing system.

  Step 6

  Back up all data.

  Triple-click on the line below on this page to select, then copy the text to the Clipboard by pressing Control-C key combination:

  /var/vm

  In the Finder, select

  Go ▹ go to the folder...

  from the menu bar and paste it into the box that opens by pressing command + V. You won't see what you pasted a newline being included. Press return.

  A folder named 'vm' should open. Inside, there may be a file named 'drag '. Move this file and only this one in the trash, but do not yet empty. You will be asked for your password. Close the folder window.

  Restart the computer and empty the trash.

• My iMac will not delete mail.

  My iMac will not delete mail. When I try to delete, (move to trash), I get this type of message the message "up to 75% o! surprise sale is here + free delivery"could not be moved to the mailbox"Trash - on My Mac""9346661.emlx"could not copy to 'Messages', because an item with the same name already exists. »

  What is happening and how to fix it?

  Try to delete/empty the trash, try again and then tell me.

• iMac does not start after 10.11.6

  Since the 10.11.6 patch my IMac does not start with my hub plugged.

  Everyone

  I assume you mean a USB hub? What does do when it's plugged in? It starts successfully when the hub is not plugged? If so, I would say that something is wrong with the hub or there is a problem with the port it is plugged or something plugged into the hub.

  Try to plug it into a different USB port on your Mac.

• G5 will not start. LED light on. Fans before working.

  Early 2005 G5. running 10.5.8.

  G5 will not start. LED light (no flashes not but solid). Fans before working. Rear fans blowing not. Cleaned up the dust. A exploded during a down and will not restart. Any thoughts? Is that a bad diet? What I would do. Thanks for any help. I love this old computer and hope to keep fixed and working.

  Sam

  Some of the fundamental things include the pram/clock battery replacement

  since they may be dead; then with a power failure, sometimes the Mac

  do not restart. Usual power management unit & reset NVRAM/PRAM are

  methods that sometimes also used as a troubleshooting measure.

  • Reset the Mac chip power management: (see SMU)

  http://www.thexlab.com/FAQs/resetpmchip.html

  • How to reset NVRAM-LANDAU on your Mac - Apple Support

  A hard reset can sometimes be used, where the power is disconnected

  the logic board and power removed from grill; Then push the Start button / stop.

  (But maybe not. Several PowerMac computers, I had, some people found this helpful)

  You may also remove and reposition cards and other items

  the inside of the case, to be sure they are connected properly. Be sure to not

  In short anything, due to the static load or residual power in the circuits.

  The hour is late here, so I'm not going offline; If all goes well a battery original or novel, etc.

  can help to put it on again. Also sometimes the power supply has some faulty fans,

  circuits or capacitors, so they can be troublesome to repair or replace.

  Good luck in this case!

• Firefox will not start after update

  Firefox will not start today. I think he had an update yesterday.
  Click it, lift the loading symbol, but never implemented. In Task Manager it is a firefox.exe * 32 running. Have you tried to uninstall, delete Mozilla Firefox folder in Program Files x 86 iti also tried to suppress the appdata profile (after saving the Favorites and passwords). I can't even boot up in firefox safe mode and can not get to start Profile Manager. If I start (7 x 64) of windows in safe mode, I can start firefox. I use Norton Internet Security. I checked the settings of firewall smart and experienced of firefox is still set to allow. I tried starting firefox with smart firewall turned off and firefox still refuses to start
  Renounce top almost ready

  Hello ziggy1, as this can sometimes be caused by a malware active on a system, please run a scan with tools of different security like the free version of malwarebytes, the adwcleaner and the scan to microsoft security.

  Fix Firefox problems caused by malicious software

• Carillon of boot loop - start 2011 MBP will not start.

  I have a start 2011 15 "MBPro8, 2

  Quad Core Intel Core i7

  2.30 GHz

  Boot ROM version: MBP81.88Z.0047.B2A.1506082204

  Intel HD Graphics 3000 VRAM:512 MB

  AMD Radeon HD 6750M VRAM:1 GB

  8 GB of RAM 1333 MHz DIMM0

  It will not start.  Trying to start the machine, it enters a loop-

  1. startup chime

  2. grey screen with Apple

  3. the small wheel starts to turn under the Apple

  4. the screen goes black

  ... and the cycle starts over.

  The computer does not start in Mode safe.  In an attempt to safe mode the loop above has the addition:

  3. a progress bar is displayed but does not progress.

  I have reset the PRAM

  It will start up in target Mode, so I was able to recover data

  In target Mode, I was able to run first aid utility on the drive.  This has not fixed the problem.

  I can hold down the Option key and see Macintosh HD and the recovery Partition.  If I try to boot from the recovery partition, I get the same loop.

  I can start in the Test of online material, which revealed no material problems

  I can boot in Verbose mode and it always happens in the same place

  Execution fsck_hfs (version 226.1.1 of hfs)

  BootCacheControl: cannot open /var/db/BootCache.playlist: 2 no such file or directory

  ' ' It would be possible for me to insert the "var/db/BootCache.playlist" file using target disk mode?

  Other thoughts?

  Check Google for this error, it seems to be common.

  Apparently the startup configuration file is corrupted. These 2 articles can be useful:

  http://www.Hackintosh.computer/?p=67

  https://www.iFixit.com/answers/view/192201/unable+to+open+-var-db-BootCache.play list % 3A + 2

• Firefox will not start after the upgrade to 27. Seen an error message during the upgrade process.

  Firefox will not start after the upgrade to 27. Seen an error message during the upgrade process, but do not remember.
  Tried running firefox.exe Pei but error message:

  XML parsing error: the undefined entity
  Location: chrome://mozapps/content/profile/profileSelection.xul
  Line 18, column 1:
  "< dialog < =" "^ =" "p =" "> < / dialogue >

  Running on Windows XP SP3. No problem whatsoever before moving to 27. Sending of Chrome that I can't open Firefox at all.

  Thank you, jschaer2000. In the meantime, he works. How long, we'll see ;-)