My Mac Pro screen is completely black when I turned it on

My Mac Pro turns on but nothing shows on the screen. The screen is completely dark. Is it because I need a new battery for my MacBook Pro? My MacBook Pro is three to four years old and I never change the battery on it. Could some help me out!!!!

Try Resetting your Mac's PRAM and NVRAM

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    Try a SMC reset:
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    kriss1692 wrote:
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    If your Mac has the NVIDIA GeForce 8600M GT graphics chip, you could have this problem:
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    If so, you will get a free repair.
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    Message was edited by: LBrandon

    Hi, and welcome to Apple Discussions.
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    Basic Troubleshooting Steps when all else fails
    - Quit the App by opening multi-tasking bar, and swiping the App upward to make it disappear.  (For iOS 6, holding down the icon for the App for about 3-5 seconds, and then tap the red circle with the white minus sign.)
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  • Laptop screen goes completely black but shows that it's still on

    Hello everyone, i'm in need of serious help!
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    erichon99,
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    Is it normal when sometimes you open a program screen goes completely black (no led backlight) for a second or two before it turns back on with "user acces control" table? Other times it doesnt go black.
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    Try a Battery pull please, with the BlackBerry device powered ON, remove the battery 15 seconds and then reinsert the battery to reboot device. This will clear all cache like rebooting a PC. Then try again and see if your problem persists.
    Click here to Backup the data on your BlackBerry Device! It's important, and FREE!
    Click "Accept as Solution" if your problem is solved. To give thanks, click thumbs up
    Click to search the Knowledge Base at BTSC and click to Read The Fabulous Manuals
    BESAdmin's, please make a signature with your BES environment info.
    SIM Free BlackBerry Unlocking FAQ
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    Want to thank me? Buy my KnottyRope App here
    BES 12 and BES 5.0.4 with Exchange 2010 and SQL 2012 Hyper V

  • My Mac Pro screen went grey ?

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    Aamirfrom,
    boot your MacBook Pro into Recovery mode by holding down a Command key and the R key as it starts up. Once the  OS X Utilities menu appears, select Disk Utility. On the left-hand side of the Disk Utility window, select your internal disk’s boot partition (typically called “Macintosh HD”). On the right-hand side, press the Verify Disk button if it’s not greyed out; if it is greyed out, or if it reports that errors were found, press the Repair Disk button. Once the verification/repair is completed, exit Disk Utility and select Restart from the Apple menu to restart in normal mode. Is your display still grey?

  • My iPhone 5 screen is completely black.  I can hear it working (you can hear Siri if you push the home key) but I can't see anything.

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    In Finder... goto Help... In the Search Window type in Displays...
    Lots of Useful Information there...
    You may find these Links Useful too:
    http://www.apple.com/support/mac101/
    http://www.apple.com/support/macbookpro/
    Cheers,

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