The screen is black until it gets to the logon screen,

My sister has an Aluminium Macbook 2.0GHZ with 4GB RAM and when she turns the mac on the screen is black until it gets to the logon screen, there is no apple on the grey background with the whirling circle below it. Once the login screen is reached the screen is perfect with no issues.
Has anyone any idea what is causing this and how to fix it?

If not successful:
- Restore from backup
- Restore to factory settings/new iPod.
- Make an appointment at the Genius Bar of an Apple store since it appears you have a hardware problem.
Apple Retail Store - Genius Bar

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Every time i click an action the screen goes black until i unclick. making it impossible to see my work. photoshop cc/ windows 8, every time i click an action the screen goes black until i unclick. making it impossible to see my work. photoshop cc/ wind

every time i click an action the screen goes black until i unclick. making it impossible to see my work. photoshop cc/ windows 8, every time i click an action the screen goes black until i unclick. making it impossible to see my work. photoshop cc/ windows 8

I've had the same problem, and sorted it using this:
Run the Boot Camp Assistant in OS X as normal and create a partition when asked, then insert your Windows 7 disc to reboot and begin the process proper.
Windows 7 requires the NTFS file system, so once in the installer just select your new partition (labelled BOOTCAMP), click on Drive options (Advanced) and choose to format it. Then select the newly formatted partition and continue.
Windows 7 will begin installing, and once it gets almost to the bottom of its checklist, it’ll try to reboot. Now, if you leave it here, you’ll get so far and see the black screen. Any further attempts to reboot will bring you to the same dead end.
Instead, restart and press a key to boot from the Windows 7 disc when prompted.
Rather than running the installation again, choose the little option at the bottom to Repair your computer. Decline any suggestions that pop up until you see a list of options with Command Prompt at the bottom. Choose that option.
At the Command Prompt, type DEL C:\WINDOWS\SYSTEM32\DRIVERS\ATIKMDAG.SYS to delete the default ATI driver, then close the window and reboot.
This time, Windows should successfully initialise a more appropriate display driver, allowing you into the desktop. From here insert your OS X disc to install the relevant hardware drivers as you normally would, then run Windows update to clear up any leftovers.
Read more: How to install Windows 7 on the new 27in iMac | PC Pro blog http://www.pcpro.co.uk/blogs/2009/10/26/how-to-install-windows-7-onto-the-new-27 in-imac/#ixzz0tinWW9tn

My ipad is unresponsive. The screen is black and I have followed the instructions to turn the iPad on. I charged it for about 20 minutes and tried again, following the same instructions and there was still no response. How do I get my ipad to turn on?

My ipad is unresponsive. The screen is black and I have followed the instructions to turn the iPad on. I charged it for about 20 minutes and tried again, following the same instructions and there was still no response. How do I get my ipad to turn on?

Frozen or unresponsive iPad
Resolve these most common issues:
    •    Display remains black or blank
    •    Touch screen not responding
    •    Application unexpectedly closes or freezes
http://www.apple.com/support/ipad/assistant/ipad/
iPad Frozen, not responding, how to fix
http://appletoolbox.com/2012/07/ipad-frozen-not-responding-how-to-fix/
iPad Frozen? How to Force Quit an App, Reset or Restart Your iPad
http://ipadacademy.com/2010/11/ipad-frozen-how-to-force-quit-an-app-reset-or-res tart-your-ipad
Black or Blank Screen on iPad or iPhone
http://appletoolbox.com/2012/10/black-or-blank-screen-on-ipad-or-iphone/
What to Do When Your iPad Won't Turn On
http://ipad.about.com/od/iPad_Troubleshooting/ss/What-To-Do-When-Your-Ipad-Wo-No t-Turn-On.htm
iOS: Not responding or does not turn on
http://support.apple.com/kb/TS3281
Home button not working or unresponsive, fix
http://appletoolbox.com/2013/04/home-button-not-working-or-unresponsive-fix/
Fixing an iPad Home Button
http://tinyurl.com/om6rd6u
iPad: Basic troubleshooting
http://support.apple.com/kb/TS3274
 Cheers, Tom

I turn on my macpro and the screen is black. I get the My new MacBook pro chime when turning it on but the screen is black and stays that way ??????

I turn on my macbook pro retina display and the screen is black.
I get the chime when turning it on but the screen is black and stays that way ??????
macbook pro is new..28 days old...
please help.

Maybe:
http://osxdaily.com/2014/11/22/fix-macbook-pro-booting-black-screen/
You also have 90 days of free telephone support
Complimentary Support (USA)
BTW, this is the Mac Pro desktop forum

Screen goes black and I get steady beeps

I have a 2004 HP Pavilion a600n, AMD processor with Window XP SP3 and 1 gb of ram. I have no viruses or spyware due to running McAfee, Malwarebytes, Spybot, Spyware Blaster, and Advanced System care.
My pc starts fine, but after about an hour, the screen goes black, and I get a series of steady beeps about a second long. There are no short, long beeps. Just steady short beeps and a black screen.
I am forced to shut down via the power button. When I try to restart, the beeping occurs again, and the monitor light remains orange.
I will let my pc sit for a day or two, and I can start it back up, the monitor light is green then, but after an hour, the whole process starts over.
I have no way of knowing if it's ram, video, or fans. My video is built into the motherboard.
I will run PC Doctor and clean the dust out of the fans, etc.
But I do not have a lot of money to just randomly go about replacing parts. Does anyone have any idea what is the most likely culprit?
Thank you in advance for any help.
Kaat1220

This shows how to get inside: http://h10032.www1.hp.com/ctg/Manual/c00225826.pdf
If you have never done something like this before, maybe enlist a friend to help. I suggest you not remove the CPU heat sink if that chore is not a task done before, at least without a knowledgeable friend along.
{---------- Please click the "Thumbs Up" to say thanks for helping.
Please click "Accept As Solution" if my help has solved your problem. ----------}
This is a user supported forum. I am a volunteer and I do not work for HP.

My screen is black on my iPhone with the little circle in the middle like it is powering down. It's been like this for over an hour! Help

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Hold the HOME and SLEEP buttons at the same time until an Apple logo appears. If it hasn't appeared after 30 seconds your phone is probably broken. If something other than an Apple logo appears see: http://support.apple.com/kb/HT1808.

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I had the same issue with my 2008 iMac and Apple support walked me through the fix yesterday...
1. Shut the computer down by holding the power button for 10 seconds
2. Restart the computer and press shift at the same time until you see the progress bar start moving
3. Once you reach the point where your screen goes dark and you see the cursor, type the first letter of the username for your computer, then hit Enter, then type your password, then hit Enter.
4. After a moment, you should see the spinning beach ball
5. Your screen should then move on to something along the lines of "Completing OSX Installation" (I can't remember the exact wording). Let it finish. After that it should go to your normal desktop and the issue should be fixed. (If your screen goes pitch black during this process, hit the space bar. I thought it wasn't working, but the screen was just sleeping).
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Safari is crashing.
Try a reset:
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From the link at the bottom of my post:
Error 23, 28, 29: These errors may indicate a hardware issue with your device. Follow the steps in this article. Also attempt to restore while connected with the white USB Dock Connector cable that shipped with your device, on a known good computer and network to isolate this issue to the device. The MAC address being missing or the IMEI being the default value, (00 499901 064000 0), can also confirm a hardware issue. Out-of-date or incorrectly configured security software can also cause these errors
iOS: Resolving update and restore alert messages
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OK. If you believe that.
When the disk is starting to die it can be bad for a moment and then be good for a while. If there was no problem while you were checking it of course it shows up good.
I tell you those are the signs of a disk that is about to die.
Allan

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The screen is black until it gets to the logon screen,

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