My screen flickers / refreshes every 10-30 seconds

MacBook Pro 2013 end edition

Yosemite 10.10.5 OSX (14F1605)

NVIDIA GeForce GT 750M 2048 MB

For the last week or so my Mac screen was flicker and cause any window of application foreground / selected go out of focus.

Vey annoying and disruptive (even as I'm typing, development goes also whenever flickering happens)

I tried all the Apple diagnostics and disc verification but in vain. Help, please.

When you find the problem, note the exact time: hour, minute, second.

These must be run as administrator. If you have only one user account, you are the administrator.

Run the Console application in one of the following ways:

☞ Enter the first letters of his name in a Spotlight search. Select from the results (it should be at the top).

☞ In the Finder, select go utilities ▹ of menu bar or press the combination of keys shift-command-U. The application is in the folder that opens.

☞ Open LaunchPad and start typing the name.

The title of the Console window should be all Messages. If it isn't, select

SYSTEM LOG QUERIES ▹ all Messages

in the list of logs on the left. If you don't see this list, select

List of newspapers seen ▹ display

in the menu at the top of the screen bar.

Each message in the journal begins with the date and time when it was entered. Highlight date back to the time you noted above.

Select the messages entered since then until the end of the episode, or until they begin to repeat, whichever comes first.

Copy messages to the Clipboard by pressing Control-C key combination. Paste into a reply to this message by pressing command + V.

The journal contains a large amount of information, almost all this is useless to solve any particular problem. When you post a journal excerpt, be selective. A few dozen lines are almost always more than enough.

Please don't dump blindly thousands of lines in the journal in this discussion.

Please do not post screenshots of log messages - text poster.

Some private information, such as your name, may appear in the log. Anonymize before posting.

When you post the journal excerpt, an error message may appear on the web page: "you include content in your post that is not allowed", or "the message contains invalid characters." It's a bug in the forum software. Thanks for posting the text on Pastebin, then post here a link to the page you created.

If you have an account on Pastebin, please do not select private in exposure menu to paste on the page, because no one else that you will be able to see it.

Tags: Notebooks

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