Try actually reading what I posted earlier and return if there are any other questions.
In the case of you genuinely missing it, here it is again:
“
….with regard to the Lenovo Yoga 520 gimmicky nonsense, wherein folding it into Tablet Mode causes the cable connecting the screen to fray and break, rendering symptoms such as flickering, freezing, blackout etc”
I didn’t include a link earlier: https://www.classaction.org/lenovo-yoga-flickering-freezing-black-screen-lawsuits