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After installing windows 8 and 10 on a hp elitebook 840 g1 laptop there are many missing drivers. These are BCM20702AU, Unknown device x5, PCI device device, PCI simple communications controller and SMBus controller. The correct drivers are Bluetooth 32 bit, Bluetooth 64 bit, Bluetooth 32 bit 2, Bluetooth 64 bit 2, HP wireless Button, HP trusted execution engine, Intel chipset, Intel engine management. Some can be updates in device manager or updating the windows operating system.


HELP Area...
Update drivers in device manager on windows 7.
Update drivers in device manager on windows 8 and 8.1.
Update windows 8 updates program.
Update drivers in device manager on windows 10.
Update windows 10 operating system.
Downloading and opening drivers in ZIP files.
Updating drivers by hand using ZIP files and device manager.
Opening and extracting HP drivers.
What to do if you have no wifi or lan..
Fixing mouse not working.
Using CMD to update drivers.
Recognizing common driver types
Resetting a windows 8, 8.1, 10 and 11 tablet or laptop
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