Satellite Pro L770 - intermittent black screen

I had some problems in the last few weeks with my L770 Pro Satellite.

Occasionally, the screen is blank, it comes and goes without apparent cause, it can sometimes be empty for an hour, sometimes more, sometimes much shorter.
There is a display when I connect to a TV via HDMI.

The screen of the computer itself can go motionless on a desk, as well as come back when it has not been moved.
As far as I know that some drivers have been updated.

From there, I can only assume that there is a bad connection?

Hello

The display turns OFF when using Notepad or while staying away from the laptop?

Please check the option called choose when turning off the display
It is found on Panel-> power-> left column Options

Here you can set the time when the display would be sounded.
I would recommend settings this forever in order to test the functionality

Tags: Toshiba

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