This is almost always a signal issue, not a monitor failure. Let's work through the connections step-by-step.
- First, check your power plug. Make sure it's fully seated in both the monitor's port and the wall outlet.
- Next, verify the video cable. Ensure your HDMI or VGA cable is firmly connected at both the monitor and your computer or console. If it's loose, that'll cause a black screen.
- Check your input source. Press the monitor's menu button to open the On-Screen Display (OSD) and make sure you've selected the correct source (HDMI or VGA) for the cable you're using.
- The cable itself might be the culprit. If you have a spare HDMI cable, swap it out with your current one to see if the monitor works.
If that didn't work: The problem might be on your computer's end. Reboot your computer while the monitor is on. Sometimes the video card needs a reset to handshake properly with the monitor.
Heads up: If you've tried all this and still get "No Signal," and the monitor works with another device, the issue is likely with your computer's video output or graphics drivers.