Generally speaking, when you start a computer, the monitor will also turn on for working. However, we recently find many people saying that their monitor won't turn on as usual. The computer turns on after pressing the Power button, but there's no display on the monitor. What happened? How can this problem be fixed?

Monitor Won't Turn on & Displays Nothing

A monitor is an indispensable component of a working computer; it is used as an output device to display information in pictorial form. All the things you type in or you want to know by using computer are shown on the monitor. In general, your monitor will turn on after you started a computer. However, problems may occur during this process; some people said their monitor won't turn on as usual. They don't know what happened or how to fix the problem when computer turns on but no display on monitor.

Attention:

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Reasons for Monitor Not Turning on

You may be wondering why won't my monitor turn on when you find the monitor not displaying, right? There are some common reasons to explain why your computer monitor won't turn on.

Fixed: Windows 10 PC Monitor Won't Sleep/Turn Off.

  • The monitor is switched off by accident.
  • The power connection is broken.
  • The monitor cable is loose or damaged.
  • The power supply is not enough or stable.
  • The power supply unit (PSU) is faulty.
  • The power socket on the wall or power board is not working.
  • Your computer is asleep after you stepped away from it for a while.
  • BIOS settings are corrupted.
  • The PC brightness and contrast are set too low.
  • There's something wrong with the monitor's backlight.
  • Some errors are found on the graphics card or video controller.
  • You run into motherboard or other hardware issue.
  • And so on.

Fix Dell Monitor Won't Turn on

Please turn to the following methods for Dell monitor troubleshooting; they work both when your Dell monitor goes black randomly and your monitor is not turning on repeatedly.

Dell Monitor won't turn on

#1. Check Power LED Indicator

Look at the power LED indicator on your Dell monitor to know its current state. On most common monitors, the indicator is located in the lower right corner of the front.

  • If the monitor power LED indicator is off completely, you should contact Dell technical support for help.
  • If the monitor power LED indicator lights up (it can be amber/yellow, green, or blue), please try the troubleshooting solutions.

#2. Check the Power Supply

  1. Remove the power plug of your monitor from the outlet on the wall.
  2. Unplug the power cord connected to the back of your Dell monitor.
  3. Wait for a while.
  4. Plug the power cord back into the monitor.
  5. Reconnected the power plug to outlet.
  6. Press the power button on your monitor and see what happens.

#3. Check the Video Cable

  1. Connect your power cord to the power outlet and the monitor properly.
  2. Check whether the video cable is connected to the correct video source.
  3. Check whether the video cable is of the correct type.

If all these steps failed, please try to troubleshoot computer monitor not turning on by performing self-test failure and power failure diagnosis.

Fix Samsung Monitor Won't Turn on

If you're using Samsung and find PC turns on but no display, follow these steps to fix.

  1. Check the power switch on the back to see whether it's turned on.
  2. Test the outlet to see whether it's working properly.
  3. Unplug the power cord and then plug it back in.
  4. Visit the Samsung Support Center to request service.
Samsung Monitor won't turn on

Fix HP Monitor Won't Turn on (Remains Blank)

Please try the following methods if your monitor won't display on HP desktop.

  • Make sure the power cable is plugged into a power outlet.
  • Press the power button to see whether the power indicator light comes on or remains off.
  • Check the cable connections to make sure your monitor is connected properly.
  • Do not shut down/restart your computer. Instead, you should reset the monitor.
  • Connect another monitor to your computer to see what happens.
  • Check the video cable and video connectors.
  • Make sure no internal component is loose.
  • Search for solutions to certain error messages.
  • Reset BIOS or disable power settings in BIOS.
  • Try to change the display resolution.
  • Check for hardware issues.

Lots of people are complaining online: my computer screen is black. How to deal with the situation when your computer screen won't turn on?

  • How to fix HP laptop won't turn on?
  • How to troubleshoot ASUS laptop won't turn on?

About The Author

Sarah

Position: Columnist

Sarah has been working as an editor at MiniTool since she graduated from university. Sarah aims at helping users with their computer problems such as disk errors and data loss. She feels a sense of accomplishment to see that users get their issues fixed relying on her articles. Besides, she likes to make friends and listen to music after work.