"Why does my screen have small flickers?"に関する回答It sounds almost as the problem I had. When I typed an address in Firefox and the suggestions were showing, they kind of got blurred out by black boxes. I tried installing the intel graphics drivers from intel, but they did not recognize the hardware. So I installed the intel vga drivers from lenovos site and after that the problem was gone. This was for the yoga 510-14 isk, but it might help. Cheers!