HP Monitor Keeps Going To Sleep (PROVEN Fix!)

If you’ve ever owned an HP monitor, there is a good chance you’ve encountered the device unexpectedly entering sleep mode.

Sometimes, you’ll notice it will repeatedly enter this setting automatically and get stuck there.

When I personally ran into this issue, I attempted a number of different troubleshooting steps that I will share with you here. Unexpectedly, the most straightforward of all the fixes ultimately worked for me and will likely work for the vast majority of users.

If your HP monitor keeps going to sleep, start by unplugging the power cable. Then, press and hold the power button on your display for up to 30 seconds to drain any remaining power. This will hard reset the device. After another 30 seconds, plug your monitor back in.

When your HP monitor eventually turns back on, it should no longer be in sleep mode.

Power Cycle Monitor And Device

Unplugging your display and the connected device and plugging them back in sounds way to simple. Believe me, I get it. Unsurprisingly, that’s why many users skips this crucial first step.

So before attempting any other fixes, start by unplugging the monitor and the connected device from the power outlet. Once unplugged, press and hold their respective power buttons for 30 seconds.

Unplugging HP monitor power cable.

It’s not unusually for excess power to remain built up in electronic devices, even if they are not actively on or plugged into a power source. By holding the power button down, any excess power (sometimes referred to as ‘flea power’) will be fully drained, resulting in a proper hard reset.

After the 30 seconds are up, release the power button and wait another 30 seconds before plugging the devices back in.

Go ahead and boot both the monitor and the connected device back up. The issue should now be resolved.

Check Display Cable Connection

If power cycling your devices doesn’t work, be sure to also look closely at the display cable connection.

Regardless of the type of display cable you are using (HDMI, DP, or otherwise), there needs to be a firm and secure connection with your PC and the backside of your monitor.

A loose display cable can lead to screen flickering, input signal error messages, and a whole bunch of other issues.

I recommend fully disconnecting the cable and taking a close look at it. Ensure the connector heads and pins aren’t bent or damaged in any way.

Also check to see that the respective display cable port on your PC and monitor are clean and not obstructed. Then, firmly reconnect the cable on both ends.

Additionally, whenever I encounter persisting monitor display errors, I also like to swap out the display cable for a different one to see if the cable itself is the problem.

Adjust PC Sleep Setting

Sometimes your monitor is entering sleep mode because your PC settings are instructing it to.

You can easily adjust your PC sleep setting by navigating to Power and sleep settings via Windows’ search bar.

Under the Power & sleep page you will see a drop down menu under the section that reads “When plugged in, turn on after”.

Windows Power & sleep setting

Make sure that a short interval period is not accidently selected like 1 minute. This means that after just 60 seconds of not using your mouse or keyboard, the monitor will go to sleep!

Instead, select a more reasonable sleep interval of 5 to 10 minutes.

Clean And Reinsert RAM Sticks

Faulty or loose RAM sticks could also be the culprit.

Whether you have a laptop or desktop PC, start by powering down your device and unplugging it. Then determine where your RAM sticks are located and access them.

In many cases this will require you to remove the back casing of your PC.

Once located, remove the sticks and closely inspect them. Keep an eye out for any visible damage along the edges and for any dust and debris that may have built up over time.

If the RAM is dirty, use a dry brush and gently clean them. You can also use an eraser to more thoroughly clean the contact edges.

Cleaning a RAM stick with an eraser.

On the other hand, if you notice chips or cracks, you will likely need to replace the sticks entirely.

Now, slowly but firmly reinsert the sticks into their appropriate seats. An improper RAM connection can result in an endless sleep mode loop so be sure they are reinserted correctly!

Finally, reconnect and power everything back up.

Enable Safe Mode And Reinstall Graphic Card

Another fix you can attempt is forcing your PC into Safe Mode and reinstalling your graphic card.

As it turns out, Safe Mode removes all non-critical system functions, meaning sleep will be temporarily and automatically disabled.

This will allow you to go in and reinstall your graphics card, which may be faulty.

To do so, turn your PC on and off consecutive times in a row until Windows displays the Automatic Repair screen.

Windows Automatic Repair screen.

From here select Advanced options > Troubleshoot > Advanced options > Startup Settings > Restart.

Once your PC boots back up into the Startup Settings page, press the number on your keyboard that corresponds with “Enable Safe Mode“.

Enable Safe Mode from the Startup Setting screen on Windows.

Once you are fully logged in, navigate to Device Manager > Display adapters. From here you will need to right click on your graphic card and select Uninstall device.

Uninstalling graphic card via the Display adapters section in Windows Device Manager.

Check the box next to “Delete the driver software from this device” and then select Uninstall device again.

Finally, restart your PC and navigate to your graphic card’s corresponding webpage to reinstall the driver.

Conclusion

If your HP monitor keeps going to sleep, do the following:

  1. Power cycle your monitor and connected device
  2. Ensure the display cable is firmly connected on both ends
  3. Adjust PC sleep settings
  4. Clean and reinsert your RAM sticks
  5. Enable Safe Mode and reinstall graphic card

If none of these troubleshooting steps work, you may want to try contacting HP Customer Service online or via phone at 1 (800) 474-6836.

As a last resort, you can also use your monitor model number to check the status of your HP warranty.

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