As I am a keen photographer I traditionally project my work from my lap top to a 22 inch iiyama HDS external monitor. Has been great since 2013 up to the past few weeks. My lap top is not now communicating with the monitor and each time I make the connection the lap-top screen turns off and both screens remain blank until I remove the connection and open and close the lid when the internal screen comes back on again. Perhaps there has been a Windows 10 up-date from Microsoft etc which now prevents this action. For some time before the external screen went altogether, I had to wait anything up to 30 mins before the external screen decided to appear. I have tried a new cable but to no avail. Has anyone also experienced this problem? Thank you