Why won't my MacBook Pro's screen turn on?

Why won't my Mac Book Pro's screen turn on at start up?

Test after taking each of the following steps that you haven't already tried. Stop when the problem is resolved. Back up all data before making any changes.
Sometimes the cause of the problem may be an outage in Apple's network, in which case none of the steps below will have any effect. You just have to wait for the outage to be fixed. That should rarely, if ever, take more than a few hours.
Step 1
Sign in to the App Store by selecting Sign In from the Store menu. If you're already signed in, sign out and then sign in again.
Step 2
Log out or restart the computer.
Step 3
Remove or disable "LittleSnitch" or any similar third-party software that blocks outgoing network connections according to the developer's instructions.
Step 4
Start up in safe mode and log in to the account with the problem.
Note: If FileVault is enabled in OS X 10.9 or earlier, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.
The login screen appears even if you usually login 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.
After testing, restart as usual (not in safe mode.)
Step 5
If possible, connect to a different network and test.
Step 6
There are reports that resetting the PRAM may solve the problem in some cases. I can't confirm.

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HT5616 Why won't my MacBook Pro 10.9.2 take my Apple ID to sign into iCloud?

Why won't my MacBook Pro 10.9.2 take my Apple ID to sign into iCloud?
I've verified my Apple ID and iCloud is working on my iPad with this same Apple ID.
THANKS.

I have the same problem. After updating to 10.9.2
My ipad and iphone works perfect. It's a certificate problem. Try to reset the keychain http://support.apple.com/kb/HT5813
Didn't work for me, so I'm calling apple support or maybe reinstall maverick if they can't solved it
Maybe it works for you :-)

Why won't my MACBOOK PRO charge anymore

Why won't my MACBOOK PRO charge anymore, I am living in China and my 8 month old MACBOOK PRO won't take a charge!! It has now gone flat and I am out of a computer. I bought a new charger but that didn't work. This is ridiculous!!

Welcome to Apple Support Communities
To check that the battery is damaged, open System Information or System Profiler (in /Applications/Utilities), choose Power in the sidebar, and copy here "Charge Information" and "Health Information". You can also check your battery status in the battery menu, on the menu bar. If its status is Replace Now or Service Battery, take your MacBook Pro to an Apple Store or reseller to have the battery replaced for free.
If you don't see any of those messages, do a SMC reset > http://support.apple.com/kb/HT3964

Why won't my MacBook Pro start up? White screen and flashing question mark.

Hi,
I've had my MacBook Pro for almost 2 years now and I installed OS X 10.8 about 4 months ago.
Today I turned the MacBook Pro on and a white screen with a flashing question mark appeared. I tried then getting the startup manager up: turning on the laptop and immediately holding in alt (option). But nothing appeared for about 25 seconds until a rotating Earth labelled 'Internet recovery' appeared that gave me options to join wireless connections. However, my internet wasn't in the options and when I tried typing in the information required to join my internet the laptop would just load and never find it.
I then tried putting in my Mac OS X install DVD (10.6.7) and help in C until the apple logo appeared on the screen and the little rotating loading circle appeared. That then disappeared and a cicle with a cross through it appeared (similar to a no entry sign). Then after about 30 seconds a blue screen followed by a grey screen appeared until eventually the disc ran properly. I then went into Disk Utility but there was no option called Macintosh HD, only the discs content. It wouldn't let me first aid, erase or repair anything.
I'm totally stumped and have 4 exams at university within the next 2 weeks. I'd really appreciate it if anyone could help me out here?
Thanks,
Best wishes,
Connor

The support article linked below is somewhat outdated. Where it refers to starting up from an installation disc, you should instead start up in Recovery by holding down the key combination command-R at the chime. Release the keys when you see a gray screen with a spinning dial.
If you don't have a current backup of all the data on the startup volume, and you want to preserve that data, then you must try to back up before you do anything else. Ask for instructions if you need them.
Note: You need an always-on Ethernet or Wi-Fi connection to the Internet to reinstall OS X from Recovery, if necessary. It won’t work with USB or PPPoE modems, or with proxy servers, or with networks that require a certificate for authentication.
A flashing question mark appears when you start your Mac

Why won't my macbook pro recognize my replaced lcd screen?

I replaces a cracked lcd screen in my unibody macbook pro early 2011. Under About this Mac, Displays, I could still see the old monitor plus the external monitor I was using with thunderbolt port. After changing out to a new lcd, and reassemblying the mac body, the computer did not recognize the new monitor. Why? I only connected the lvds cable to the motherboard and did not completely close the unibody and rehook up the camera and some other cabling which I think is unrelated to the display. I think that with only the lvds cable connected to the new lcd screen, it should light up and show up under displays. No?

You can try VLC, I belive it supports playback for AVCHD. It I am wrong, it's free, so no harm no foul. You can find it and videolan.org.
As for iMovie, it should recognize AVCHD, unless your camera has some sort of new or proprietary version of the AVCHD codec, in which case you can only cross your fingers and hope Apple updates iMovie as there is no codec plug-in architecture to expand iMovies native support.

Why won't my macbook pro play youtube videos?

Why wont my macbook pro play youtube videos????
I bought this over the summer and it's now Nov 28th. I've had it with this thing and nobody is answering my question! Please help!
I reset safari, emptied my cache, cleared my history, uninstalled and re-installed flash player and nothing has helped. In fact, un/reinstalling flash player worsened the problem. And I cannot update it becuase it says "not recognized".
I do have avast anti-virus: but I can't fix the warnings in it (after I scan, some warnings popup and it wont let me fix it and I have no idea where to find it in the computer itself). Does this have anything to do with it? I need virus protection, so I dont want to get rid of it.
I do not have the money to buy firefox (and it's never worked for me ever anyways).
I know it's not my internet because my dad's pc works great and my sister's mac (for school) loads youtube videos instantly.
I also have this annoying issue where every page on the interned needs to be reloaded three times before itll load the first time. It sits there for five minutes and does nothing, then I reload the page and BAM its loaded: EXCEPT YOUTUBE.
For a $1400 machine, I'd like to know what and why this is happening.

mariposasss wrote:
Why wont my macbook pro play youtube videos????
Perhaps there is something wrong with your software and/or a corrupt cache file outside of the browser.
I reset safari, emptied my cache, cleared my history, uninstalled and re-installed flash player and nothing has helped. In fact, un/reinstalling flash player worsened the problem. And I cannot update it because it says "not recognized".
Hmm hard to tell what's causing this. May have to do a process of elimination to cure everything on the machine.
I do have avast anti-virus: but I can't fix the warnings in it (after I scan, some warnings popup and it wont let me fix it and I have no idea where to find it in the computer itself). Does this have anything to do with it? I need virus protection, so I dont want to get rid of it.
Uninstall the anti-virus, they always cause issues on Mac's.
You say you need anti-virus, so install the free ClamXav, it's a program you run as you need it, because 99% of the malware out there is for Windows and won't run on a Mac, thus you can just run ClamXav when you need it on where you need it. Won't bugger up the machine.
I do not have the money to buy firefox (and it's never worked for me ever anyways).
Firefox is a free web browser by the open source community, it's very powerful and highly customizable with more add-ons, extensions, personas, themes than any other browser. Some things can be done on Firefox can't be done on any other browser at all. Certainly for someone who is a bit more seasoned to use it fully.
I know it's not my internet because my dad's pc works great and my sister's mac (for school) loads youtube videos instantly.
I also have this annoying issue where every page on the interned needs to be reloaded three times before itll load the first time. It sits there for five minutes and does nothing, then I reload the page and BAM its loaded: EXCEPT YOUTUBE.
For a $1400 machine, I'd like to know what and why this is happening.
You mentioned your "dad" and you've mentioned a delay loading pages and not YouTube at all.
Are you by any chance the Administrator of the computer? Can you install Firefox if you wanted too just as a experiment or does it ask for a Admin name and password and you can't provide it?
"Nannyware" has the ability to block sites and slow down page draws as it's consulting with the nannyware company if that site is suitable to be loaded on your machine.
If your are the Admin of the machine, then your going to have to methodically go through the fix it list I've generated here to resolve your issue as I cant' tell what's causing your problem specifically behind a screen.
If it's too much for you, take the machine to a local Mac/PC software repair shop and they can fix you up.
I suspect by #12 your machine will be fixed.
Step by Step to fix your Mac

Why won't my MacBook Pro connect to my wifi?

I have a MacBook Pro running OS X 10.8.5. My ISP is BT Vision so have a open reach fibre modem and a BT HomeHub. All my other wifi devices (iPhone 4S, 5S and Ipad 3) connect to my home network and internet first time every time! However, my MacBook is extremely temperamental.
When the laptop does connect to the internet it takes a random combination of restarting and turning the wifi on and off. If the laptop is left to connect on its own it either takes an extended period of time (30mins) or it simply won't connect. I have looked through the wifi settings but can't see any reason why the laptop won't connect. The wifi network is visible all he time.
Any ideas?

I know how to solve this problem had the same issue, its basically because you BTHome hub runs a 5GHz frequency a long with a 2GHz frequency and for some reason your mac tries to connect to that even though they dont have the techologies will allow them to run on that frequency, making you not connect to the internet. To fix this log into your homehub settings onlin by going to http://bthomehub.home/then going to advanced settings, wireless which should be under it and then click on the 5GHz and turn it off or rename it and click apply. So you can make your laptop connect to the correct frequency. IF you can connect to the internet on your laptop then you can still do the same steps and process on your phone or any device that connects your BThomehub.

Why won't my MacBook Pro turn on?

I've been trying to turn on my MacBook Pro all morning, at first it wouldn't change from the start up screen (with the Apple symbol and swirling loading circle). I waited for a while before force shutting it down. Since then, everytime I try to turn it on, the start up screen will appear for a few seconds before it shuts down by itself. I've only had the MacBook Pro for about a month, I don't understand why it would be having problems already. Any insight or suggestions would be much appreciated!
~Q

MaQBookPro,
Post here with your response, good news, and more so we can solve this issue.
A swirling loading animation means that a routine is in a circular loop. I don't know what caused the loop, but to stop it, press the power button on the upper right hand of the MBP. Hold it down for at least five seconds, or at least until the screen turns black and the computer reboots.
You have several options. You can let the MBP load again, hopefully back to its former self. Or you can press SHIFT continually after pressing the power button; this opens the MBP into safe mode, where you can perform various diagnostics that might be useful.

Why won't my Macbook Pro stay asleep?

Hello All,
I am desperate and really need an answer to this question. I have tried everything and had no luck.
I have a MacBook Pro (13-inch, Mid 2012) running Yosemite. Whenever I close the screen, it will fall asleep like it normally does. However, the external light will only pulse once (instead of continuously), and then I can hear the hard drive begin spinning again. The external light then stays at a constant, but the screen does not light back up.
It's like the computer falls asleep, but then only the hard drive wakes up, and stays woken up. This fact causes my Macbook to eventually use up whatever battery power it has and get warm in my backpack. The only thing I can do to preserve battery power is to shut down the whole computer and boot it up every time I need it.
I've already tried EVERYTHING found on this page: OS X: When your Mac doesn't sleep or wake - Apple Support. In addition, I have spent hours browsing other forums and help posts. Any help would be fantastic.
Also, on a side note. My computer seems to run much slower than it did on it's native Mavericks.

Test after each of the following steps that you haven’t already tried:
Step 1
Take all the steps suggested in this support article. That's the starting point for any further effort to solve the problem. Skipping any of those steps may mean that the problem won't be solved. Note that, as stated in the article, the computer will not sleep if some sharing services are enabled.
Step 2
From the menu bar, select
           ▹ System Preferences ▹ Accessibility ▹ Speakable Items: Off
Step 3
Select
           ▹ System Preferences ▹ Bluetooth ▹ Advanced...
and uncheck both boxes marked
          Open Bluetooth Setup Assistant at startup if...
Step 4
Disconnect all wired peripherals and test. If you use a wired keyboard and/or mouse, use different ones. You must rule out the wired keyboard and mouse as possible causes of the problem.
Step 5
Reset the SMC.
Step 6
Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you turn on the computer, and again when you log in.
Note: If FileVault is enabled in OS X 10.9 or earlier, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Ask for further instructions.
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.
Safe mode is much slower to start and run than normal. Don’t launch any applications at first. If sleep still doesn’t work properly, back up all data and reinstall the OS. After that, if you still have the issue, make a “Genius” appointment at an Apple Store to have the machine tested.
If sleep now works as expected, go on to the next step.
Step 7
Still in safe mode, launch the usual set of applications that are running when you have the problem, including your login items, one at a time, testing after each one. Some applications may not work; skip them. You might be able to identify the cause of the problem this way.
Step 8
If sleep is still working after you’ve launched all the usual applications, restart as usual (not in safe mode) and test again. If sleep still works, you’re done, at least for the moment.
If you still have the sleep issue after restarting out of safe mode, post again.

Why won't my macbook pro accept both 4gb Ram, It will only use a 4gb and a 2gb?

I have a mid 2009 2.6 Ghz 15" macbook pro, and recently purchased two samsund ddr3 4gb 1600hz 204 pin RAM. I removed my two 2gb standard Ram from my macbook pro, and inserted the two 4gb Ram. When I turned the computer one it began using its 3 beep sequence as if the Ram fail, so I removed one 4gb Ram and reinserted a 2gb Ram and the computer started. It said I had total 6 gb ram. I am wonderind why It won't accept both of the 4gb Ram.

Exactly what Kappy and Stedman1 states.
The RAM you purchased is way out of specs for what you need.
Go and return or exchange them for either a set of Crucial, Corsair, Mushkin or Kingston (non value) RAM.

Why won't my Macbook Pro Retina not hook up to Air Play Via Apple TV

So I want to hook up my laptop to the TV. Now Everything is up to date and my model is 2013 computer and the latest addition of the Apple TV Product. I have the top icon on my screen and click on my name, enter my password, but then it says it cannot connect. Now my internet is wireless at a campus, but other kids got it hooked up easy over wireless. I don't know what I am doing wrong. I went into settings trying to get rid of any blocks and home sharing is on, so I am stumped. Please Help!

Hello again,
I believe the update was: MacBook Pro EFI Firmware Update 1.2
Thanks!
Becky
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Why won't my Macbook Pro recognize my iPhone 5s?

SPECS:
Macbook Pro Retina, Mid 2012 (OS X Version 10.9.1) = up to date
iTunes (Version 11.1.4) = up to date
iPhone 5s (Version 7.0.4) = up to date
My Macbook Pro won't recognize my iPhone when I plug it in.
The problem is not related to cable issues as the phone charges fine when plugged into the wall.
I have tried rebooting both my Macbook Pro and iPhone.
My only guess is something in the latest iTunes update is causing this problem. Help?
- TheStallion

I bought a new cable and finally tried it to no avail.
A few days ago my iPhone 5s lost all functionality (not due to any damage on my part). I took it to an Apple store and they told me that something was wrong internally and gave me a new phone.

Why won't my Macbook Pro charge?

All of a sudden, my Macbook Pro won't charge. I believe it has something to do with the charger, it no longer charges when my Macbook is off, and rarely when it is on, even! Sometimes it will start charging but only if the computer-connecting end is in a very specific position. Sometimes, not at all. I've tried changing power outlets, and restarting the computer. Also, the aforementioned end has a couple scratches, but doesn't appear to have any serious external damage. I've seen the prices of new chargers, and I'm really hoping to avoid buying a new one. Also, is there anything I could've done to mess up the charger? And how can I make my Macbook charge normally again? Please help!

try unplugging the adapter from the wall and mac for 1 minute, then plug it back in and see what happens. you can also try resetting the SMC.If you live near an Apple store, it can't hurt to bring the mac to and the charger to get it diagnosed. Alternativley, you can purchase a refurbished charger.

Why won't my Macbook Pro go into sleep or screensaver mode?

For some reason my MacBook Pro stopped going into sleep or screensaver mode. I have always had my computer set on the most energy efficient settings. It used to go into sleep and screensaver mode just fine. I did not make any changes to my settings (and no one else has access to my computer) and now it just will not go to sleep by itself and it will not go into screensaver. The only light on my computer that still dims is the keyboard, it will dim when it is supposed to. Occasionally, my computer screen will randomly dim when it is supposed to, but then it will brighten again without me touching anything. Even more occasionally, it will go into sleep and screen saver mode, but this hardly ever happens. Can someone please tell me what is wrong?

You could check Activity Monitor and see if something is running in the background stopping it from going to sleep or having the screen saver come up.
That is what it sounds like. A program is keeping it from sleeping.

Why won't my MacBook pro power up?

Hello, I have a MacBook Pro that I purchased in Jan of 07. When I upgraded to Snow Leopard it told me that my battery was dead and that it needed replacing. So I did that yesterday...because it wouldn't power up, even with the MagSafe power adapter plugged in. What happens is...I press the power button, the disc drive(I think?..to the right of the trackpad) makes its normal noise and the light thats in the button to open the screen(the SIL?) lights up, but doesn't "breathe" like it normally does(bright to dim). The screen doesn't turn on at all..no other noises..no startup chime or anything. Then it just stays like that...so far for over 12 hrs. I've left it charging for over 24hrs...with the power off, on, with the screen open and with it closed(so four days worth of charging). I've recently read some of these posts and I've tried resetting the SMC with no luck. The new battery was purchased from the Apple store do I know it's not some cheapy knockoff. Still I get the same results. Is my MacBook Pro dead or what? Please advise..any help would be greatly appreciated!;-) Thank You!

Lokimax24 wrote:
Is my MacBook Pro dead or what?
Yes
MacBook Pro: Distorted video or no video issues . The affected computers were manufactured between approximately May 2007 and September 2008.

Why won't my MacBook Pro's screen turn on?

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