screen of Mac pro 2014 remains black when power up

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  Hi all

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  So, if this happens to you:
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  MrRoy

  -----

  Note: The Edit button was not there so I had to double post :/

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  Hello!

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  Hello

  Please provide information for a better understanding of the issue.

  1. what was the recent change in hardware or software performed on the computer before the question?

  2. are you having the same problem when you Hibernate the computer?

  Check the display driver for power management problems.

  Method 1

  Check if allow this device to wake the computer is checked in the Device Manager.

  a. click Start, type Device Manager in the start search box and press ENTER.

  b. Select graphics cards, it will display your display driver, right click and select Properties.

  c. Select the power management tab.

  d. check the allow this device to wake the computer check box.

  e. repeat these steps for the network adapters and the mouse as well.

  If the problem is not solved then continue to.

  Method 2

  Remove both power on your computer and check to see if that fixes the problem.

  Reference:

  Change, create, or delete a power plan (scheme)

  Try to create another plan of the power of your computer and check if the problem persists.

  Power plans: frequently asked questions

  See also (additional links for more information),

  http://answers.Microsoft.com/en-us/Windows/Forum/windows_vista-system/blank-screen-after-Vista-went-on-sleep-mode/b5e5693a-28a6-4391-b9ac-36d345d6a3b9?msgId=a464f2ec-0651-4E2F-8CB0-f546b09b0989

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