No back light or black screen when starting, no back light or black screen when starting
My screen on my MacBook Pro went black on me last night while working on the computer. I'm wanting to know how to fix it. I tried starting it in safe mode by holding down the Shift key when starting it but that did not work. I unplugged everything..just the power cord and still nothing. I also tried control, option PR and still nothing. I went to remove the battery but saw it takes a special three pronged screw driver. Which I will get if that is the issue. Can anyone offer any other suggestions.. I don't want to spend the money on repairs if someone could help.
try doing an SMC reset the following article tells how:
http://support.apple.com/kb/HT3964
if there is still nothing on the display i would take to apple store or service provider so they can see if it's a video or graphics card issue on the mac.
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How safe is it to pull the plug on the Apple TV after one hour of a flashing light?
No, sounds like when you dropped it an cracked the screen it may have also damaged the logic board or the repair person damaged a cable.
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When I am on a call and I come to hang up, the phone which when to my ear has a black screen, starts to light up so I can see and click the hang up button, but it then blacks out intermittently and in the brief moments it is lit up, the hang up button doesn't work unless I press the home or lock buttons first
Wow- thanks Jim! I removed the case and voila... it worked. Knock on wood that you solved my problem with such an incredibly simple solution. I'll find out where this proximity sensor is and make sure my case does not interfere with it.
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Annick -
I have an iMac from 2008. When I start I get gray screen with apple and turning gear. Next blue screen. Then light blue screen with turning gear. Back to blue screen. Now just back and forth blue to light blur
Reinstall OS X:
Reinstall OS X without erasing the drive
Do the following:
1. Repair the Hard Drive and Permissions
Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. 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 installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
2. Reinstall Snow Leopard
If the drive is OK then quit DU and return to the installer. Proceed with reinstalling OS X. Note that the Snow Leopard installer will not erase your drive or disturb your files. After installing a fresh copy of OS X the installer will move your Home folder, third-party applications, support items, and network preferences into the newly installed system.
Download and install the Combo Updater for the version you prefer from support.apple.com/downloads/.
Reinstalling 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: Select Reinstall Lion and click on the Continue button.
Note: You can also re-download the Lion installer by opening the App Store application. Hold down the OPTION key and click on the Purchases icon in the toolbar. You should now see an active Install button to the right of your Lion purchase entry. There are situations in which this will not work. For example, if you are already booted into the Lion you originally purchased with your Apple ID or if an instance of the Lion installer is located anywhere on your computer. -
I have some problems when turning on my iphone 5. The screen turns black and then white and the appli is red and when I finally get in and start an app it turnes itselves off. This happens every time when I turn it on. After I have turned it on several times it acts normal.... But something is wrong...Anyone???
Try reset
Reset: Hold down the Sleep/Wake button and the Home button at the same time for at least ten seconds, until the Apple logo appears. Note: You will not lose any data
If no joy, restore backup using iTunes.
Finally last attempt, rsetore as new and sync content back manually. -
Pro won't start. Instead get a black screen and a beeping every 2 seconds. Light at front right corner of keyboard flashes in sequence with beeping.
If it is giving a single beep every two seconds, then it is not seeing any of the memory. You could try taking the back off, remove the memory module and reinsert to see if that corrects the problem. Or just take it to an Apple store genius bar and have the techs do that for you.
If you are uncertain about working on the memory modules, you can find on-line videos for doing so at OWC, http://www.macsales.com where you can see the procedure for your year, make and model of MacBook Pro. -
When i open my macbook pro- the screen lights up and then goes black-
When I open my Macbook pro- the screen lights up and then goes black- keybook stays backlite- can not get screen to come back on. Must reboot-
thoughts-?? Macbook is 6 months old and on second hard drive ( failure after 45 days).Hey! exact same thing happens to me... I use the keyboard shortcut to turn off the screen which is ctrl - shift - eject button. Then just poke a key and it wakes up again fine, it doesn't fix the problem but at elast you don't have to reboot. x
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I was having some problems with my mac, safari and itunes was freezing alot. I have to force shutdown and when I tried to start up again i get to the login page, type in my password and it starts to load, but then the screen turns blue for a few seconds and it goes back to the log in screen. What should I do?
Please Help!!Somewhat similar problem:
Put in the password, hit enter, the screen goes blue for half a second, then goes back to login screen and carries on logging in as usual. Drives me mad. It doesn't happen with a fresh Lion installation, nor if booted into safe mode. On the machine in question it also happens to new user accounts.
I've removed all login items, including Startup Items and Launch Demons (pun intended) and Agents, I've compared system login plists with a fresh Lion installation - can't see differences. I've removed Little Snitch and PeerGuardian (no more third party kexts).
@Carolyn: I've done disk maintenance with DiskUtility and fsck and even DiskWarrior, cleaned caches, etc. etc.
Any ideas would be gratefully received.
Sorry for trying to hijack the thread (as it's not about Lion), but it seemed dead anyway. -
When I get to the login page on my macbook, I type in my password and it starts to load, but then the screen turns blue and it goes back to the login.
Iv tryed this numerious times still keeps going back to pasword. Can not get any further. Tried restart holding shift key.. still nothing. What do i do?Thank you for your help.
I couldnt get to the hard drive/ desktop. Soft login not even working. So i could not do any of that.
In the end i took it to Apple and its actually the hard drive on its way out. A common issue with that series of Mac. Funny seeing i dont use this mac much. However being 2.5 years old and out of warrently, Apple have recognise this issue with this series/ Model and installing a new hard drive at no cost.
Very luck and greatful. And not feeling so dumb that it was something i did or could troubleshoot myself.
Hope this helps others that it just might be your hard drive failing. -
My iPod touch suddenly stopped working. It was fine earlier, but when I went back a few hours later, the screen had gone black and I was unable to turn it on. It is now unresponsive and my computer does not recognize it when it is plugged in. I thought it just needed to be charged but there seems to be a larger issue now. What should I do?
Let your ipod die. Then when it is dead charge it adn turn it back on. After that it should be fine.
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After installing the new software to my iPhone 4S , my dream zoo either will not start or when it does it has a blank screen that has a few icons on it that wont work. How can I fix this is it possible to go back and reinstall the older software ?
Unfortunately I tried that and it didn't work. Thanks for the help though. I tried to uninstall and it said I couldn't because the file is corrupt or something, but I think I finally got it uninstalled and/or deleted or whatever, but now I try to reinstall/download it again from the beginning and I can't. No matter what I do I can not get Firefox working again. No matter how many times I try to redownload it. Any other suggestions?
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I turned off my iPod touch and when I tried to turn it back on, it won't load and just sits on the black screen with the Apple logo.... HELP!!!):
Try a Reset...
Press and hold the Sleep/Wake button and the Home button at the same time for at least ten seconds, until the Apple logo appears. Release the Buttons.
Restart / Reset
http://support.apple.com/kb/ht1430 -
When I power up my 2008 Mac Pro I get the "welcome chime", fan comes on, a light comes on on my Apple moniter and then nothing - black screen. What,s going on?
what you describe as the "welcome chime" is the indicator that your Mac has passed the Power-On Self test, and if a suitable source of software can be found, booting is likely.
If the screen stays dark, the most likely explanation is a graphics card failure. But it could also be caused by a backlight failure in the LCD, so be sure you try shining a bright light at the screen to be check whether the picture is there, but just not illuminated.
Graphics card failure will end the boot-up process in some cases, and not have an impact in others. Two external indications you can use when your display is not working are: The Caps Lock key, which is under the control of Mac OS X, and the Control-Eject dialog box shown below. Note that the default is Shutdown, so a Mac that shuts down in response to Control-Eject followed by Return is working fine. -
I dropped my iphone 4 pretty hard, it cracked (although it already had a few cracks in it) and now the screen is black but sometimes has a background light turn on and then off. Holding the home button and off button at the same time do not work. When I plug it in to charge or to the computer it vibrates every 10 seconds and itunes does not seem to recognize it. It gets really really hot when plugged in (which I don't think is normal). icloud does not recognize it under "find my iphone" either. What could the problem be? I am wondering if dropping it dislodged something inside. if so, what did I dislodge and is it possible to fix this myself?
ThanksSounds like that drop was a critical one, my friend. I would make an appointment at your nearest Apple Retail Store, because you're going to need a replacement. Also as a side note: the reason that the charger is making the phone vibrate over and over is because there is a disconnect somewhere in the charge port of the phone, causing it to plug in and out over and over.
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My iPhone 5 screen is black and will not come back on. The phone still works when paired with my vehicles Bluetooth what's wrong with it, and can I fix it?
I have a similar problem. I restored my iPhone 5 to the latest available OS. After completing the process the phone never restarted. The phone was fully charged when I restored it but now refuses to charge past the red battery icon. I have been able to get the phone in UFD mode several times and have been able to load the new OS on the phone. The Apple logo does come on and the software fully loads. iTunes tells me the phone will restart but never does. I left it to charge all night but it never appeared to load the battery. This morning I went to the Grand Central Terminal apple store for help. A woman at the store plugged the phone in but it never charged. She absolutely refused to believe that I got my phone in UFD mode and loaded any software on. I don't think it is a battery issue. The only solution I was given was to buy a new phone. Repairing it was out of the question. At this point the phone is completely useless. Thanks in advance for the help.
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My Mac Mini was not sending a signal to the monitor. I powered down using the power button and now it will not start. When i power up I get a strange 2 tone sound, like a warning alarm. The fan starts, and the light comes on, but no screen.
I have tried with a wired USB keyboard and mouse using a single screen. Powered up with option pressed. No change.
Reset SMC no changeRun the Apple hardware test to see what it tells you. Run the extended test when prompted, which can take awhile.
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