Hello, I have the HP X27 monitor, which has a great picture and is a good size. After the monitor has been in use for a while (1-2 hours) the screen will go black for 5-10 seconds intermittently. It is a bit annoying but I have been dealing with it for the past 6 months or so. I was a little too busy to get involved with HP. I have updated windows and the drivers I could find for the monitor. I have been having great difficulty trying to get in touch with HP and when I checked the information on the website it appears the warranty date was changed to make it so it is no longer covered. I have submitted to dispute this and also noticed the X27 monitor is no longer sold where I purchased it, giving me the idea that this is a common issue they are aware of and took the monitor off the shelves. If someone could please get in touch with me I would greatly appreciate it. Thanks!