I have an odd issue with the screen of a Lenovo Yoga 510. Intermittently, the laptop starts with an orange screen where it should be black. Only colours that use pure black are affected, others render OK, including greys. This happens on the splash screen at first power on, so isn't a software/driver issue, also confirmed with an external monitor. Additionally if the laptop is left on a flat surface for a while, the issue will appear. I suspect because of poor design restricting airflow from underneath. Power-cycling the laptop almost always clears the issue. This first started to appear shortly after I bought it last year & Lenovo supposedly fixed it under warranty. To be fair it's been fine until a couple of months ago when it first re-appeared. Just like before, it's getting progressively worse to the point where there's now a 50% chance of it happening at each power on. Flexing or tapping the screen & base makes no difference so doesn't appear to be a bad connection. It's now out of warranty & Lenovo have washed their hands, despite it being a repeat fault. Google has found no other instances quite like mine so just wondering if there's anyone here with in depth knowledge that could offer some pointers?