the lower third of my screen started flickering constantly a while back and I tried everything I found online to make it stop (except for the cooling, as I don't usually carry around a fridge or a fan and it also flickers when I just started the surface - so no heat).
The only thing that stops the flickering in my case is to perform a constant CPU stress test. I discovered this by accident. There are several free programs you can download to do this. As soon as the stress test starts, the flickering gets worse and then stops. As soon as I stop the test, the flickering comes back :). The constant noise is annoying of course. But at least you can work.
I hope this helps some people that also weren't lucky with any of the other methods.
Posts made by Liz
CPU stress test