My MacBook Air won't start up, only black screen no logo

I've had my MacBook Air since Christmas 2014. I have not spilt anything on it, I have not dropped it and the charger isn't broken.
Yesterday my computer wouldn't turn on, it was working the day before so I don't know why this was happening. When I turn on I mean:
Press the turn on key
I hear the chime for it to turn on
then all of a sudden
no logo only black screen and then nothing after it.
I really don't want to reset it because it has all my school work on it and very important pictures on it.
Is there anyway we can fix it? I've looked on this website many times and others and nothing has really helped.
If you have anything new please reply ASAP.
I need this fixed within 2 weeks.
Thank you.

Reinstalling OS X 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.
Reinstalling OS X Without Erasing the Drive
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 and press the Continue button. After Disk Utility loads select the Macintosh HD entry from the the left side list. Click on the First Aid tab, then click on the Repair Disk button. If Disk Utility 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 Disk Utility and return to the main menu.
Reinstall OS X: Select Reinstall OS X 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.
Alternatively, see:
Reinstall OS X Without Erasing the Drive
Choose the version you have installed now:
OS X Yosemite- Reinstall OS X
OS X Mavericks- Reinstall OS X
OS X Mountain Lion- Reinstall OS X
OS X Lion- Reinstall Mac OS X
Note: You will need an active Internet connection. I suggest using Ethernet
if possible because it is three times faster than wireless.

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TS2570 My MacBook Pro won't start up.only gray screen

Hi there,
My MacBook Pro won't start it show only gray screen (with apple logo )
And I have tried these solutions none of them worked
1/ Reset PRAM and NVRAM
2/ Restart in safe mode
3/Run Disk Utility in Single User Mode
After I tried third option it shutdown by itself
Please I need data inside the laptop , i have no backup
what should I do ?
I need some kind of solution does not contain formatting or deleting my data
Thank you in advance

..Step by Step to fix your Mac
Create a data recovery/undelete external boot drive
My computer is not working, is my personal data lost?

My MacBook Air won't start it's grey with apple logo Howe do I fix this?

I have 2008 MacBook Air today I can't start up. When I press the power button it shows gray screen with apple logo and that thing spinning . How do I fix this?

Take each of these steps that you haven't already tried. Stop when the problem is resolved.
Step 1
The first step in dealing with a boot failure is to secure your data. If you want to preserve the contents of the startup drive, and you don't already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data that has changed since your last backup, you can skip this step.
There are several ways to back up a Mac that is unable to boot. You need an external hard drive to hold the backup data.
a. Boot into the Recovery partition, or from a local Time Machine backup volume (option key at startup.) When the OS X Utilities screen appears, launch Disk Utility and follow the instructions in this support article, under “Instructions for backing up to an external hard disk via Disk Utility.”
b. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, boot the non-working Mac in target disk mode. Use the working Mac to copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
c. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.
Step 2
Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to boot, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can boot now, one of the devices you disconnected, or a combination of them, is causing the problem. Finding out which one is a process of elimination.
If you've booted from an external storage device, make sure that your internal boot volume is selected in the Startup Disk pane of System Preferences.
Step 3
Boot in safe mode. Note: If FileVault is enabled, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Post for further instructions.
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
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.
When you boot in safe mode, it's normal to see a dark gray progress bar on a light gray background. If the progress bar gets stuck for more than a few minutes, or if the system shuts down automatically while the progress bar is displayed, your boot volume is damaged and the drive is probably malfunctioning. In that case, go to step 5.
If you can boot and log in now, empty the Trash, and then open the Finder Info window on your boot volume ("Macintosh HD," unless you gave it a different name.) Check that you have at least 9 GB of available space, as shown in the window. If you don't, copy as many files as necessary to another volume (not another folder on the same volume) and delete the originals. Deletion isn't complete until you empty the Trash again. Do this until the available space is more than 9 GB. Then reboot as usual (i.e., not in safe mode.)
If the boot process hangs again, the problem is likely caused by a third-party system modification that you installed. Post for further instructions.
Step 4
Sometimes a boot failure can be resolved by resetting the NVRAM.
Step 5
Launch Disk Utility in Recovery mode (see Step 1.) Select your startup volume, then run Repair Disk. If any problems are found, repeat until clear. If Disk Utility reports that the volume can't be repaired, the drive has malfunctioned and should be replaced. You might choose to tolerate one such malfunction in the life of the drive. In that case, erase the volume and restore from a backup. If the same thing ever happens again, replace the drive immediately.
This is one of the rare situations in which you should also run Repair Permissions, ignoring the false warnings it may produce. Look for the line "Permissions repair complete" at the end of the output. Then reboot as usual.
Step 6
Boot into Recovery again. When the OS X Utilities screen appears, follow the prompts to reinstall the OS. If your Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade.
Note: You need an always-on Ethernet or Wi-Fi connection to the Internet to use Recovery. It won’t work with USB or PPPoE modems, or with proxy servers, or with networks that require a certificate for authentication.
Step 7
Repeat step 6, but this time erase the boot volume in Disk Utility before installing. The system should automatically reboot into the Setup Assistant. Follow the prompts to transfer your data from a backup.
Step 8
A dead logic-board battery in a Mac Pro can cause a gray screen at boot. Typically the boot failure will be preceded by loss of the startup disk and system clock settings. See the user manual for replacement instructions.
Step 9
If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store to have the machine tested.

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Hey Msazama30,
First, I would start off your troubleshooting by following the steps in this link:
Mac OS X: Gray screen appears during startup
http://support.apple.com/kb/TS2570
Then, if that doesn't work, try out the information in here:
Step by Step to fix your Mac
https://discussions.apple.com/docs/DOC-3353
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Restart.
http://support.apple.com/kb/ts2570
Start up in Safe Mode.
http://support.apple.com/kb/PH14204?viewlocale=en_US
Repair Disk
Steps 2 through 8
http://support.apple.com/kb/PH5836
Reset PRAM. http://support.apple.com/kb/PH4405
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http://support.apple.com/kb/PH10763?viewlocale=en_US

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ooooooooops so sorry about this, here it goes and start with the first code.
With all these operations I recommend you TAKE OUT MEMORY CARD and DO A BACK UP OF YOUR STUFF!!!
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HT3964 My MacBook Air won't start

Myacbook air won't start. It's not even a year old

a little more information might be helpfull ,does it do anything ? is it fully charged ( greenlight on magsafe plug on ) ? was it shut down or was it slept or hibernated before the "no start"

Attn: macbook pro won't start up past grey screen NO MATTER WHAT

my macbook pro won't start up past the grey screen, NO MATTER WHAT I DO. i've searched all the discussions on this, and NOTHING WORKS. nothing caused this either - i was just browing the internet and using ichat, and my computer shut down, and that is when this started.
I am EXTREMELY disappointed with this bullstein. My computer works great, etc., and I support mac and apple to the nth degree, but then some stupid crap like this happens and I can't use my computer at all. I have to use my sister's **** ibook g3 to even do this.
PLEASE HELP. do NOT post what you have already posted in the other discussions, and i've already been welcomed to the boards. I can't go to an apple store because i'm on vacation in new mexico for the summer, and there no stores anywhere near here. is there any real advice around here? I need to use my computer. That is why I spent close to $4,000 for it with upgrades and software.

where can i get an install disc for the macbook pro?
You really need to use the one that came with your MBP. If you don't have it, a retail Tiger OS X disc should work.
also, could an archive/install potentially free up some harddrive space on my computer?
No, it will actually use more space, so you will need at least 6G of free space. To clean your hard drive, use WhatSize.
WhatSize >>
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Genius reservation http://www.apple.com/retail/geniusbar/ .
or find an Apple Authorized Service Provider https://locate.apple.com/country
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Hello, Need help with a macbook air, running mountain lion. I don't know which version because my computer won't start.
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Macbook Air Won't Start Correctly

WHello.
I have the previous version of the Macbook Air. When i turn it on, everything seems to be normal. I input my username and password and login.
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What could be the problem ? Any suggestions ?
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Restart.
http://support.apple.com/kb/ts2570
Start up in Safe Mode.
http://support.apple.com/kb/PH14204?viewlocale=en_US
Repair Disk
Steps 2 through 8
http://support.apple.com/kb/PH5836
Reset PRAM. http://support.apple.com/kb/PH4405
Reinstall OS X
http://support.apple.com/kb/PH10763?viewlocale=en_US

My MacBook Air won't start up, only black screen no logo

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