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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 Stream - 14-cb171wm
Microsoft Windows 11

Cursor gone and touchpad not working on Stream model 14-cb171wm.  
Window 11 Home in S mode. OS version 11 22H2 (OS build 22621.1848)

Mouse properties showed no Device in the Hardware panel until I  loaded a wireless mouse which is using microsoft drivers and functions properly. 

I found an APP entitled "ELAN Touchpad Setting" which when opened brings up a window entitled "ETD Properties" which is mostly blank.  Driver version and Device fields are blank.  The "Enable Device" button has no effect.  
Spent hours on virtual assistant trying all fixes. None worked.

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