How do I turn off the power completely to replace screen on C-720-2848?

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  For this printer only when it is connected to the network. Quite happy to sit quietly when printer NOT connected to the network.

  Unplug the network cable from the printer, check and clear all print queues (there may be a doc pdf sitting in a pc or server print queue)

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  If this does not cure the problem, then the likely problem is a defective formatter Board.

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  8 win there a way. 1. move the cursor to the top right of the screen

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  3 be able to click at the bottom of the screen

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  This isn't my idea, but someone sent me.

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  Start by:

  Reset the PRAM and NVRAM on your Mac.

  MacIntel: Reset of the controller (SMC) system management

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  If you are unable to start;

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  Please make sure that you back up.

  1. Restart the computer. Immediately after that the chime hold down the command and R until the Utility Menu appears.
  2. Select disk utility, then click on the continue button.
  3. Select the withdrawal (usually Macintosh HD) entry of the volume in the list aside.
  4. Click first aid icon in the toolbar. Wait until the button is active, then click it.
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  Install Yosemite or El Capitan, from scratch

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  Restart the computer. Immediately after the chime hold down the command and R buttons until the Apple logo appears. When the Utility Menu appears:

  Select utility disc in the Menu Utility, then click the continue button.

  When loading disk utility, select the volume (entered into withdrawal, usually Macintosh HD) from the list of devices.

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  Define the type of Format Mac OS extended (journaled).

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  Select reinstall OS X and click on the continue button.

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  Pedro

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  Hello

  Just in case, run disk utility.

  Open utility disk located in Applications/Utilities

  Then select the disk to boot on the left and then select the first aid tab and then click run.

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  Above article refers to-> http://sourceforge.net/projects/firefoxadm/

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  Thank you for your patience. We have just published a tip regarding the issue you are facing. Please veiw the link below to to respective BIOS

  http://support.Lenovo.com/en_US/diagnose-and-fix/detail.page?docid=HT080427

  For now, I'll put this post as the solution to guide customers accordingly and will continue to follow the case. Please still post here on the results and should not be considered an adequate solution we umark cela and are continuing their investigation.

  Concerning

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