solution Contentsolution Content

HP Monitors - Monitor is blank

Use these steps to troubleshoot your blank monitor or to determine if the monitor is defective.

Note:

Before you begin, make sure that you perform the following steps:

  • Turn off the computer.

  • Disconnect all connected devices from the computer, except the mouse and keyboard, including USB flash drives and memory cards.

  • Make sure that you have a second monitor cable if your monitor has a detachable cable for testing purposes.

Check the power

To check the power, disconnect the video cable from the monitor and make sure that the monitor power cable is plugged into an AC outlet.

When you press the power button on the monitor, the power light turns on. If the power light remains off, the monitor is not receiving power or the monitor is defective.

Check the following items before attempting to service or replace the monitor:

  • Make sure that the AC outlet has power and the AC outlet matches the power rating for the monitor.

  • Connect the monitor to a different AC outlet.

  • Try a different HP power cord.

If the light is on, the monitor has power, and you can continue to the next step.

Display the default on-screen message

Use the following steps to display the default on-screen message.

  1. Connect the video cable to the computer and the monitor, and then turn on the computer.

  2. Turn on the monitor, and then wait about 10 seconds.

  3. As the computer starts up, disconnect the video cable.

    Note:

    If a message is displayed on the monitor, the display panel is working and the problem is related to the video signal. Continue to the next step.

    If the monitor remains blank, turn off the computer, and then continue to the next step.

Fix a bad video connection

Use the following steps to test the video connection between the PC and monitor.

  1. Remove the video cable from both the computer and monitor.

  2. Check for the physical damage to the HDMI, DisplayPort, or USB Type-C port on the computer. If the port is damaged, use a different port.

  3. If possible, try a different video connection type. For example, if your monitor has an HDMI port and a DisplayPort, try to use the other port to connect to the computer.

  4. Connect a different video cable to the computer and monitor. Only use a cable adapter if necessary.

    If the issue is not resolved, continue to the next step.

Test the video connection

When you turn the monitor on, if it is working again, there is no need to continue troubleshooting. If the monitor is still having issues, use the following steps to test your video connection.

  • If your monitor is still blank, connect it to another computer using a different cable to determine if the monitor is defective. See Connect the monitor to a different computer.

  • If the monitor displays startup screens, but does not show the Windows startup screen, use the following steps to set the computer to a compatible resolution.

    Note:

    Find the recommended display resolution for your monitor in the User Manual or in the product specifications for the monitor model. If you are unable to find the recommended display resolution for your monitor model, temporarily use 1024 × 768 for troubleshooting purposes.

  1. Turn on the computer, and then press the f4 key repeatedly when the first startup screen is displayed.

  2. After Windows opens, right-click an open area of the desktop, select Display settings, and then select the recommended resolution under Display resolution.

    Note:

    If the recommended resolution is not available, download and install updated video driver software for your computer. Updating the video driver software can add more resolution settings.

  3. The screen blanks out briefly, and then displays the new resolution.

    • If you are satisfied with the new display settings, click Keep changes or Yes.

    • If Windows returns the screen to the previous resolution or if the screen is blank, try another setting until you find a display configuration that is compatible with the monitor.

  4. Restart the computer. When Windows starts, the monitor displays a full-screen image with a high-quality resolution. If it does not, continue to the next step.

Connect the monitor to a different computer

Connect the monitor to another computer that has video using a different cable.

  • If the monitor works, the video hardware on the original computer is likely the source of the issue. You can try connecting the original computer to another monitor that works to update its video drivers.

  • If the monitor remains blank, repair or replace the monitor.