I left for lunch and came back to a black screen. I bought an Acer Nitro VG240YP monitor a couple days ago and the display goes black for a second and turns back on. 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. It goes black for about 2 seconds, and at seemingly random times, it flicker back and fort. Secondary monitor is working. Comment brikeh macrumors 6502a. Looked at other posts about this issue be could not find anything addressing my issue. 1) Press the menu button on your monitor and select Menu. Showing on screen [Displayport] indicating it doesn’t get signal. In this configuration the external monitor blacks out for a couple of seconds randomly a couple of times per hour. Ive had it for about 3 years but about a year ago it blacked out on me out of nowhere. 2) Go to Other Settings, then select Factory Reset. I have a brand new 2017 Spectre 15" laptop hooked up to an external monitor with an HDMI cable. Got a monitor issue. 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. "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). This happens at random times. 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. I'm hoping that Apple writes a driver to fix this since it's pretty annoying to be writing then everything goes black. In this case, you’ll need to bring your monitor or your computer to a repair store and seek professional help. Does it all the time after a few minutes. Only way to get the primary back is to reboot the computer. Recently, lots of computer users complain that their PC or laptop screen goes black every few seconds: case 1. As soon as I stop being active on the computer, my monitor blinks black and then the screen reappears. External Monitor is detected, but black My monitor was working perfectly this morning. Monitor goes black randomly - posted in External Hardware: So I have an acer x223w monitor. Check if this fixed your problem. It happens when I'm gaming, watching youtube videos and even when I'm just reading something on the PC. I have a similar problem using an external LG monitor, flashes to black for a few seconds then comes back on. I've noticed that my external LCD randomly went black a couple of times. I've tried installing updates and the hdmi cord, but nothing has fixed this. Windows 10 Monitor Keeps Going Black Then Comes Back.