Recently I had an issue with my internet and during that time I noticed that I had a display quality issue - on darker or black screen I had little coloured dots like the snow effect you get on a tv channel that is off air though not quite so intense. I had assumed it had something to do with the poor quality internet signal and didn't worry about it. But now the internet connection has been been repaired and I have checked the signal and by all accounts we are getting a strong signal with download and upload speeds where they are meant to be but the "snow" is still there. I have had some other issues creep up since the last Windows 10 update that I have been able to fix but I am at a loss on this one. Has anyone any suggestions on how to troubleshoot or to fix this issue? Bear in mind that though I am reasonably intelligent and can follow instructions and am not intimidated by computers, I am not horribly computer savvy.