If your LG monitor has a black screen or its OSD menu is not working, turn off the monitor and disconnect all the cables from it.
When unplugged, press the Power button on the monitor to clear its cache. Wait for 3 minutes, then plug it back in and turn it On.
This should solve the problem. If still can’t open the OSD menu, it may be a hardware issue with your monitor.
If your LG monitor has a black screen, but the OSD menu is working, you can try fixing it by disabling the automatic standby feature in the monitor’s settings, changing the port, or performing a factory reset.
Disable Automatic Standby
A workaround that has fixed the black screen issue for many users is disabling the automatic standy feature in monitor’s settings.
Here’s how to prevent your LG monitor from automatically going into standby mode:
- Open Menu on your monitor.
- Select Settings.
- Under General, select Automatic Standby and disable it or change its value to maximum. See the screenshot below:
Ensure Monitor is Getting Power
While it may seem too obvious, if your LG monitor is not turned on, its screen will be black. Make sure that your monitor is turned on and its power indicator LED is lit.
If your monitor power LED is not lit, but is connected to a power source, then inspect its power cable. If the power cable is damaged, it won’t provide enough power for the LG monitor to work.
Change the power cable and try again.
Also, try inserting the power cable into some other wall outlet.
Check Monitor Video Cable
If the monitor is receiving power, but still shows a black screen or white screen, then maybe HDMI or any cable you are using for video connection is the culprit.
Check if your HDMI or DVI cable is properly connected to both your LG monitor and your computer. Also, check both ends of the HDMI cable for any damages.
If you have a spare HDMI cable, try using that. If it solves the issue, then the problem was with your HDMI cable.
Factory Reset your LG Monitor
If none of the above methods works for you, the final step you can take is to restore default factory settings on your LG monitor.
To factory reset your LG monitor:
- Press the menu button on your monitor.
If your LG monitor has a joystick, press it to open OSD menu.
- Select Settings.
- Navigate to the General and select the Reset to Initial Settings.
If none of these fixes work, your LG monitor might have a hardware issue. In that case, I would recommend getting in touch with LG customer support for assistance.
If you have any questions related to this guide, feel free to ask in the comments section!