I purchased my Dell U2715H monitor in September 2015 and the quality and performance is excellent in every respect, except for the following: quite frequently, but not always, the monitor displays white `interference' type bands on startup of the PC. Search `U2715h screen flickering issue' on youtube to see an example of what I mean.
If I leave the monitor on and restart the computer, it almost always solves the problem. It is also almost always resolved by switching the monitor off after use and only switching it on again some ten seconds or more after I have started the computer. A combination of the two solutions has so far meant that I have eventually got rid of the banding. What is causing it?
The video card is a Nvidia GTX970. I have checked that the monitor drivers for both monitor and video card are up to date.
Any help appreciated.