The monitor does not display a picture, but the sound works as well as the backlighting. I have tried both the HDMI and DP and nothing has worked. I was just wondering if anyone might have more insight on this issue and or ways to maybe repair it as the monitor is far out of warranty. The monitor is an LG 29UM69G-B it has been used for a few years and recently this problem came up. I have tried reinstalling the drivers and to no avail, all I see is the backlight with no picture even though the sound works just fine and my computer detects the monitor.