Question Horizontal lines on screen, and power plan doesn't work

miamiparis

Estimable
Feb 1, 2016
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I have a ROG GL771JW laptop with Windows 10. I have 2 problems, if you can help me in only one, it's great also:

1) When I move the lid (to close it a bit or to open it a bit), there are horizontal lines. To remove them, I have to adjust the lid at the right angle, or I have to tap on the back of the screen.
In addition to that, my webcam sometimes doesn't work, so I have to do the same (move lid or tap back of screen) to make it work.
To fix it, do I have to replace the LCD cable or the whole screen?

2) In my Power plan, after some time, it should turn off display, but doesn't happen, why? It used to work before. The screensaver also doesn't work, after the time set up.
 
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