TS1587 I tried everything, except for reinstalling the SO-DIMM memory modules. Still, my iMac will not wake up. Turning it on you can hear the fan run, but the display stays dark. Any ideas what to do? Thanks Maja
My iMac won't start up, or wake from sleep. I've tried everything, except for reinstalling the SO-DIMM memory modules. Still, my iMac will not wake up. Turning it on, you can hear the fan run, but the display stays dark. Any ideas what to do? Thanks!
Mac doesn't boot
Can you hear the fans and hard drive and see the white boot screen? Flashing question mark? The circle just runs and nothing happens? Only black screen and nothing else? These can be very helpful to diagnose the source of the problem. [1]
Flashing question mark [2]: This is usually a sign of a failed hard drive. This indicates that boot up volume can not be found.
Black screen: This is usually a sign of a failed logic board. There is no single reason for this and this may be caused by failed GPU, screen, CPU or RAM.
Circle of death/no circle/blue screen: This is usually a sign of a hard drive failure. This may NOT be a dead hard drive, just broken permissions or something
Gray screen/Apple logo/spinning gear or globe/prohibitory sign/folder with flashing question mark [3]: This could be a sign of faulty hardware but more likely a software issue, i.e. broken permissions, failed software update, etc.
[edit]
What to do
First, hold down the option key (also known as the alt key) just after you've pressed the power button. This should show all the available options to boot from, so if you have Windows installed through Bootcamp or a disk in your SuperDrive, you should be able to see them along with your OS X drive/partition. Select the OS X partition with arrow keys and press enter. Startup key combinations
If that doesn't help continue doing the steps from below:
1. SMC reset [4]. Shut down and unplug all cables including power cord for at least 30 seconds and then plug in power cord and keyboard/mouse.
2. PRAM reset [5]. Hold down option, command, P and R while booting. Start it when you hear the sound and don't let go before it reboots.
3. Safe boot [6]. Hold down shift while booting to boot into safe mode. If this works, open Disk Utility from Utilities and repair your permissions and verify the disk
4. Hardware test [7]. Insert the install disk (disk 1 in Mac which shipped with OS X 10.5.4 or earlier, disk 2 if shipped with OS X 10.5.5 or newer) and hold down "D" before the grey boot screen opens. Follow on screen instructions
5. Boot from install disk. Boot from the disk that came with your Mac. Hold C while booting. Select Disk Utility from top bar and repair permissions and verify the disk. Reboot normally and see if it works now.
6. Boot from another Mac (Firewire target disk mode). Connect the machines with a Firewire cable. Power on your Mac and press T. Select the other Mac's hard drive. Download the current OS X combo update. Run the combo update installer and select the drive that won't boot as the destination.
7. "Repair" OS X. Boot from the install disk as in point 5. and reinstall OS X. This should NOT erase any data, just replaces the system files which may have caused your booting problem. Now install the latest combo update for OS X and repair permissions on your drive with Disk Utility.
7.1. Install OS X into an external hard drive and then boot from it [8] and try to copy your data from the hard drive before proceeding. If you have done a backup recently, you don't have to do this.
8. Restore OS X from Time Machine backup. Boot from the disk that came with your Mac and choose the Time Machine restore option. This step will lose any changes made since your last backup but the system and your data will be put back to exactly as it was on that date.
8.1 Reinstall OS X. Boot from the install disk as in point 5. and select Disk Utility again. Now erase the whole hard drive and install OS X again. If you had a Time Machine backup and step 7 worked you don't have to do this.
Similar Messages
-
"Find my iPad" must be turned off before you can restore my iPad. But i forgot my passcode as well, what to do!!!
If you have IOS-7, read this.
-
When listening to music on ATV, it will play two songs from the playlist, then no more. You can see the playlist on songs, but it won't play. Turned everything off, reset the network...nothing works. Any ideas? It used to play fine...for hours at a time.
Hi. Thanks for your reply.
It is happening via "shuffle" in a playlist. Always two different songs within the playlist. You can see the next song on the screen that should, theoretically, be playing...but nothing happens. Even when you push "play" on the remote, it doesn't receive the command.
I reset, then restored ATV. Now, it doesn't limit itself to two songs, but does stop after a few. The more trial and error I do, the more I believe the problem is with Homesharing in iTunes. If I turn off Homeshare, then turn it back on, a couple more songs will play in the playlist. I have shut down iTunes, restarted computer, completed updates, but nothing seems to change it.
It used to play fine for hours on end, but has now found this glitch. -
On the bottom right of my MacBook Pro there is a solid line about 3/4" long (looks like it could be a download status gauge). Any idea what that is?
Unfortunately you screen shot is not showing. There is a bug in the forum software that sometime will prohibit images from appearing. This may be one of those occasions.
Browsers such as Safari and Firefox do have small windows that will show downloads which will permit you to monitor the progress. Without actually seeing what you are referring to, I cannot give you a definitive answer.
Ciao. -
Have a macbook pro 2009 currently at version 10.5.8 need to install new version for i phone 5 but will not let me until I install MAC OS X Version 10.6 cant find this anywhere! Any ideas thanks
Click here.
(75139) -
I tried to change the memory and now my Imac will not power on. and there are no beeps. what did I do wrong?
Don't know. Could be any number of reasons. Re-read the how to install RAM manual again for your model iMac. Double & triple check to make sure you purchased the right RAM chips. Make sure they are seated properly. If you didn't hear a snap when seated, the RAM is not properly seated.
-
My iphone icon shows in itunes but is missing from my computer desktop. It is detected as a iphone camera device. I have tried everything from uninstalling-reinstalling, disabling-enabling, and updating. Still no iphone icon showing in my computer desktop. I have been troubleshooting this for 7 days with no luck! Please help?
yes, I dony know what else to do?
thanks -
Some of the songs I bought from iTunes will not sync to my iPhone. They show up on my phone, but the letters look faed and I can't play them. How do I fix this? I tried restoring my iPhone and it didn't work.
Sorry, I meant the letters look "faded" not faed.
-
My itouch will not let me download apps or music, it says something about credit, but the app im trying to download is free?
Hi drathbun6,
If you are having issues connecting to the iTunes Store, you may find the troubleshooting steps outlined in the following article helpful:
Can't connect to the iTunes Store
http://support.apple.com/kb/TS1368
Regards,
- Brenden -
When I start up my compute, I can hear it starting up but the screen stays black. Has anyone else had this problem and found a fix?
If you press the caps lock key does it light up? If it does then this indicates that your system is booting but the display is either not recognized, is not displaying any video, or the display is displaying video but the backlight system is not lighting up. As long as you've tried turning up the brightness then there is not much you can do other than take it in for a diagnosis. If you have a very bright flashlight you can turn on the iMac and then shine the flashlight onto various areas of the iMac display to see if you can see any faint images on the display. If you do then this indicates that the display is displaying the image, but the backlight is not turning on for some reason. It doesn't change the outcome, but at least you can assist the technician who is troubleshooting your iMac.
Please let us know what you find out. -
In iTunes the iPhone device icon will not show up whenever I plug in a USB into my PC but the iPhone icon will show up in 'This PC' so if anyone who knows a resolution to my problem with my iTunes or PC,it would really help me.I need at least Help or some Tips.I have already tried many things to iTunes and my PC like trying to restore my PC but that do anything.Also,would it be fine if i contacted (call) Apple Support? Please,I need help because what I think is wrong is my PC,iPhone,or USB might be messed up so if anyone could help me with this,it would be really helpful and for anyone to be nice enough to help me.
I think this article will help you.
-
I press the on button and the white light wont turn on, I don´t hear and fan noise, or the beeping sound. This Mac is 1 1/2 months old. Can anyone help.
You are under warranty. You can call Applecare and get advice from the tech rep, or you can bring it to an Apple store or authorized Apple service provider.
-
After installing mavericks, the iMac will not wake from sleep properly (at all)
I've upgraded to 10.9 (late 2012 21" iMac), and I notice in the morning when the iMac has been sleeping overnight, it will not wake up,
During the day, if it sleeps for a few hours, it seems fine, and wakes normally, prompting me to type my password,
In the morning however, I hit a key (on my wireless keyboard), and the display wakes up, I get a dark grey screen, and see the loading circle (not the beachball) in the middle, and see the cursor for a few seconds, before it then disappears, and reappears.
This cycle repeats itself,
The 'fix' is to do a forced shutdown by holding the powwer button until it shuts down, and then restart.
Anyone else find this problem/find a solution?Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, or by corruption of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode and log in to the account with the problem. Note: If FileVault is enabled on some models, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal boot may also be somewhat slow.
The login screen appears even if you usually 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. Test while in safe mode. Same problem? After testing, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of the test. -
When I play movies on my apple tv I can hear music, sound effects but no dialog from characters - no voices
Push and hold the select button on the remote while the content is playing. You should get an audio options menu. Guessing you selected one of the the secondary audio track options by mistake somewhere.
-
How can I use the new Firefox to access nwapeople.com?
Well, two thoughts.
The battery has completely discharged and will take overnight to recharge, so don't expect much in an hour.
The battery has deep discharged and is now dead. It will never recharge and should be replaced.
If your iPod Touch, iPhone, or iPad is Broken
Apple does not fix iDevices. Instead they exchange yours for a refurbished or new replacement depending upon the age of your device and refurbished inventories. On rare occasions when there are no longer refurbished units for your older model, they may replace it with the next newer model.
You may take your device to an Apple retailer for help or you may call Customer Service and arrange to send your device to Apple:
Apple Store Customer Service at 1-800-676-2775 or visit online Help for more information.
To contact product and tech support: Contacting Apple for support and service - this includes international calling numbers.
iPod Service Support and Costs
iPhone Service Support and Costs
iPad Service Support and Costs
There are third-party firms that do repairs on iDevices, and there are places where you can order parts to DIY if you feel up to the task. Start with Google to search for these.
The flat fee for a battery exchange is, I believe, $99.00 USD.
Maybe you are looking for
-
On video loss, can I have a black screen instead of the QT logo?
I have a MAX/msp app that streams MJPEG video from a camera and displays it using Quicktime. When the camera is disconnected the image changes to a white background with the Quicktime logo. It looks terrible. Is there a way to replace that logo wit
-
Why can't I download my itunes library to my iPod touch?
iTunes can detect my device and when I synch a 3 step process starts: waiting synch to start, preparing to synch, changes applied and finish. Why won't my library download from iTunes to iPod?
-
Sales person in the service call report
Hello I am using PLD to make a new layout for the service call report. I would like to add a column with the sales person of the customer. I have already added the field from the table, but i just get a blank column. Does anyone know how I can do it?
-
How to create a Column that will "carry over" values
I have the first 5 colums of the following table and I would like to create the last column (Carryover). The calculation for carryover (current row) is PRIOR_DAYS_OF_SUPPLY(current row)-DAYS_BTW_REFILL(current row)-carryover (prior row) This is trick
-
Mac Pro hard drive failure how to recover data
I have a 2007 Mac Pro with four hard drives in it. One of my drives had a message the other day indicating I/0 error, it came back several times, and now I don't see the hard drive on my desktop. Is there a way I can recover the data from this drive?