Black screen after few minutes and comes back after re pluging the power switch

[gtnitr_ninja]

The subject itself says it when I use my PC for few minutes the monitors shows blackscreen it goes to normal when I open the monitor power cable and plug it back how can I get rid of this issue

[Echo_Lake]

@gtnitr_ninja

Thank you for posting on HP Support Community.
 

Don't worry as I'll be glad to help, I have a few troubleshooting steps we could try to fix the issue:  
Before you begin:

Do the following items to prepare for troubleshooting:

• Turn off the computer.

• Disconnect all connected devices from the computer except the mouse, and keyboard. This includes removing thumb drives and camera-type memory cards.

• If the monitor has a detachable cable, obtain a second monitor cable for testing purposes.

Disconnect the video cable from the monitor and make sure the monitor power cable is plugged into a power outlet.

With the monitor plugged in, press the power button on the monitor. There should be a power indicator light located on the monitor case. What happens to the light?

• If power light remains off when you press the power button, either the monitor is not receiving power or the monitor is defective. Check all of the following items before attempting to service or replace the monitor:

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

  • Connect the a different power outlet.

  • Try a different power cord.

• If the light comes on, the monitor has power. Continue to the Next Step.

Using a different cable, connect the monitor to another computer that has video. Turn on the monitor and the newly connected computer. What happens?

• If the monitor works, the video hardware on the original computer is likely to be the source of the problems. 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.

Hope this helps! Keep me posted for further assistance.
Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.