HP zbook Studio G3 not connecting to external monitor after sleeping

[NoIdeaWhattodo]

When my laptop wakes up from sleep, it fails to connect to my external monitor. The monitor displays a "No Connection" message and then goes to sleep. Even restarting the laptop does not restore the connection.

The only workaround I've found is reinstalling the latest NVIDIA drivers, which allows the external monitor to connect again without needing a full shutdown and restart. However, having to do this every time is frustrating. Is there a permanent fix for this issue?

[BeemerBiker]

Disable fast start
To disable fast startup on Windows, open the Control Panel, navigate to Power Options, then "Choose what the power buttons do," and under Shutdown settings, uncheck the "Turn on fast startup" box; if the option is greyed out, click "Change settings that are currently unavailable" first.

Let me know if this works or not. If it works then possibly there is a way to re-enable fast start and and still have the external monitor wake up.

If it does not work then possibly you can disable / enable the display adapter to wake up the monitor.  This is done in the device manager. If this works let me know as possibly the disable/enabled can be automated.

It could also be a sleep problem in windows 11

Try the sleep and energy report and see what they recommend.

If your laptop is not sleeping and your power plans are set properly then some device or application is preventing sleep. Windows uses Modern Standby and has two tools to analyze sleep problems that can occur in modern standby.

Energy Report	A list of possible problems ranked as Errors, Warnings, or Informational
Sleep Study	The history of sleep going back several days

These report are obtained by using the Administrators command prompt.
Copy and paste the following into the command prompt window for the energy report.

powercfg /energy .\energy-report.html

Note the number of errors and warnings.

Copy and paste the following commands into the same window to get sleep history

powercfg /SleepStudy .\SleepStudy-report.html

Let me know what you find out.

[NoIdeaWhattodo]

Hello, the first option didnt work but reseting display adapter does.

 PowerShell script that resets display adapter that runs with task scheduler when I wake up PC from sleep.

Get-PnpDevice -Class Display | Disable-PnpDevice -Confirm:$false
Start-Sleep -Seconds 5
Get-PnpDevice -Class Display | Enable-PnpDevice -Confirm:$false


This is a good fix for now

[BeemerBiker]

I am glad you got it working.  I typically use devcon64 to enable / disable the specific device from the task scheduler but your powershell is good.

You might mark the help / solution so other can use it.