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Here is the solution to resolve PCI Express Root Complex driver Issue Click here to view the instructions!
HP Recommended
HP Dragonfly 13.5 inch G4 Notebook PC (6Q258AV)
Microsoft Windows 11

Hi.  I used to have an Elitebook 840 model laptop and had no issue.  But ever since I got the Dragonfly G4, I have the issue.  I have an external monitor connected to my PC via the display port to a USB-G5 dock.  Every so often, randomly, the external screen goes black for a few seconds and then comes back.  This is so frustrating.  Please help.  

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