Windows 10: Fresh install Windows 10 Pro on HP laptop 840 G1. Lost Screen Adjustment by using Function...

I have recently last two days Installed a Brand new SSD into my HP 840 G1 laptop and also a totally clean fresh installation of Windows 10 Pro 64 Bit.The HP laptop can control screen brightness by using the Function Keys F9 & F10, I have used this way to control brightness for as long as I have owned the laptop which is many years. I now cannot control screen brightness using these Function Keys and after speaking with HP and ensuring I have all the latest Drivers, Firmware etc and with Microsoft Support still cannot. All the other Function Keys work correctly; has this ability to use

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HP Probook470 G1 Shutdown Issue

Here's the list of all drivers for HP ProBook 470 G1 on their Polish site specifically made for Windows 10:
https://support.hp.com/pl-pl/drivers...ook-pc/5405414

Each time I encounter similar problems I start with this page (even before checking specific drivers on the manufacturer's site):
Intel(R) Driver & Support Assistant FAQ

 

Adjust Screen Brightness and Resolution in Windows 10

The screen brightness adjustment keys of my HP Pavilion laptop are not recognized by Windows 10. It is so bright that it is harming our eyes. Also, I followed the suggested alternate steps from many websites and none of them worked as the brightness adjustment
option is not at all available even not inside Control Panel.

Please note that before installing Windows 10, I got notification that my laptop is compatible for the upgrade. Can you please help?

 

Windows 10: Automatic Repair after reboots, but not shutdowns? (HP EliteBook 840 G1)

I have a bit of an odd situation. I am working on an HP EliteBook 840 G1 that will be sold to a friend of mine. I have reinstalled Windows 10 fresh and made sure to include all of the drivers either from HP Support Assist or HP's website directly. It
has the latest 1909 feature update. Whenever I reboot the computer, it comes up with Automatic Repair first. If I just simply reboot from there, it comes up fine. However if I do a full shut down, then power it on a few moments later, the Automatic Repair
does not happen. So it seems like the Automatic repair happens if I reboot from Windows itself.

I have checked the Event logs. I have seen warnings about the WLAN driver and I have also noticed that it lists error 34 for BTHUSB about a low power mode issue. I have reinstalled the drivers for both the WLAN and Bluetooth accordingly. I also saw possible
errors in the event log for the BITS service. I have tried to run the troubleshooter on it (it found nothing), I have restarted the service, I have also run DISM and SFC to try to correct the problem. Despite all of this, it is still happening. Can anyone
give me any ideas on what else is going on? Thanks.