hp all in one

[DebSYA]

My hp pavilion all in one will not turn on.  Screen shows "monitor off" or "Check HDM1

-In cable"

[Meghana_10]

@DebSYA, Welcome to the HP Support Community. 

Thanks for reaching out about your query regarding the HP Pavilion.

We're thrilled to have the opportunity to assist you and provide a solution. We hope our assistance has been helpful! 

If your HP Pavilion All-in-One is displaying messages such as "monitor off" or "Check HDMI cable," it could indicate several potential issues related to power, display settings, or cable connections. Here's a step-by-step guide to troubleshoot these problems:

1. Check Power Supply:

   • Ensure that the power cable is securely connected to both the wall outlet and the all-in-one PC.
   • Try plugging the device into a different power outlet to rule out a faulty outlet.

2. Hard Reset:

   • Turn off the computer and unplug it from the power source.
   • Hold down the power button for at least 15 seconds to discharge any residual power.
   • Reconnect the power cable and try turning the PC on again.

3. Verify HDMI Cable and Connection:

   • If you're using an external display with an HDMI cable, ensure it's securely connected to the HDMI port on both the computer and the display.
   • Try a different HDMI cable to rule out a defective cable.

4. Check Display Input Settings:

   • If there are buttons on the monitor or an on-screen display menu, use them to ensure that the correct input source (HDMI1, HDMI2, etc.) is selected.

5. Test with External Monitor:

   • If possible, connect your all-in-one to an external monitor using an HDMI cable to see if the issue persists. This can help determine if the problem is with the internal display.

6. Inspect for Hardware Issues:

   • Check for any visible damage or loose connections around the computer and its ports.

I hope this helps!

Take care and have an amazing day! 

If you would like to thank us for our efforts to help you, go to the public post and give us a virtual high-five by clicking on "Yes" for the question "Was this reply helpful?" below my message, followed by clicking on the "Accept as solution" on my public post.

Regards,

Meghana