Comment brikeh macrumors 6502a. It goes black for about 2 seconds, and at seemingly random times, it flicker back and fort. Over the past few months, my primary monitor randomly (no pattern to the issue) goes black but the led shows it to still be working. I left for lunch and came back to a black screen. I'm hoping that Apple writes a driver to fix this since it's pretty annoying to be writing then everything goes black. As soon as I stop being active on the computer, my monitor blinks black and then the screen reappears. In this configuration the external monitor blacks out for a couple of seconds randomly a couple of times per hour. I've tried installing updates and the hdmi cord, but nothing has fixed this. 2) Go to Other Settings, then select Factory Reset. In this case, you’ll need to bring your monitor or your computer to a repair store and seek professional help. Got a monitor issue. I have a similar problem using an external LG monitor, flashes to black for a few seconds then comes back on. The monitor is detected, as I can drag windows over to it. If your monitor still goes black randomly, your issue is very likely caused by a hardware failure. Monitor randomly goes black for one second at a time I have a relatively new monitor and computer system (bought May 2003) and in the past few months, the monitor will go completely black for about one second and then come back on randomly throughout the day. 1) Press the menu button on your monitor and select Menu. Showing on screen [Displayport] indicating it doesn’t get signal. Secondary monitor is working. Does it all the time after a few minutes. It happens when I'm gaming, watching youtube videos and even when I'm just reading something on the PC. I have a brand new 2017 Spectre 15" laptop hooked up to an external monitor with an HDMI cable. Ive had it for about 3 years but about a year ago it blacked out on me out of nowhere. Check if this fixed your problem. Looked at other posts about this issue be could not find anything addressing my issue. External Monitor is detected, but black My monitor was working perfectly this morning. This happens at random times. Recently, lots of computer users complain that their PC or laptop screen goes black every few seconds: case 1. "Sometimes this doesn't happen but when it does, my screen would go black for a second then 5 seconds go by and it happens again (it would repeat another 10 or more times). Only way to get the primary back is to reboot the computer. Monitor goes black randomly - posted in External Hardware: So I have an acer x223w monitor. I've noticed that my external LCD randomly went black a couple of times. I bought an Acer Nitro VG240YP monitor a couple days ago and the display goes black for a second and turns back on. Windows 10 Monitor Keeps Going Black Then Comes Back.