Windows 10: Can't connect to this network Windows 10 on HP EliteBook 840 G2

My HP EliteBook 840 G2 is not able to connect to the WiFi network set on TP-Link Archer C80 AC1900 router either to 2.4 GHz or 5.0 GHz SSID and getting the error "Can't connect to this network" even if the WiFi password is correct or by pushing the WSP switch on the router.But the laptop does connect to both 2.4 GHz or 5.0 GHz SSID set at my Netgear R6220 AC1200 router.The Archer C80 router has been updated with the latest firmware 1.10.0 Build 210716 Rel.51301n. The Wireless network security option is set to WPA2-PSK with AES Encryption similar to Netgear Router b

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HP ELITEBOOK 840 G2 hp drive encryption tpm authentification failed.(0xa)

HP ELITEBOOK 840 G2 hp drive encryption tpm authentification failed.(0xa)

I cant login, can access bios, restoring security settings doesnt help. i also have winmagic data security on my screen and have never seen this before. pls help

 

Making "Restore Media" for two MAR REFURBISHED HP EliteBook 840 G2 Computers

I purchased two MAR REFURBISHED HP EliteBook 840 G2 Computers from Walmart. The first came from Joy Systems; the second from Arrow. New HP's come with a "factory restore Image" in a separate partition on the hard drive and a program, which will run only
once, that allows the owner to create one copy of a "factory restore image." These MAR HP refurbished computers came with neither. What Joy Systems advertises as "restore media" is only a series of procedures that will restore Windows 10 to all of the default
settings.

I believe Microsoft has a link, which will allow you to download the "update version" of Windows 10 for those who updated from Windows 7 & 8.1, but I believe that does not include the HP drivers for the hardware. Getting the correct drivers is very difficult,
and very time consuming if you know how, which I do not.

This will not help should the computer become infected with serious Malware, where I have always been able to run a "out of the box - factory restore," then reupdate the computer, reinstall any added programs, and that totally corrects any problems.

I have been told that the 1809 version of Windows 10 has built into it a procedure to create an "out of the box - factory restore" media on a flash drive, exactly like the "run only once" program on a new HP computer would create.

If it is possible to create an "out of the box - factory restore" media on these two computers, would someone tell me how to do it, or where on Microsoft's website the instructions are for doing it?

HP EliteBook 840 G2's have no disk drives in them.

I would do it on the Arrow refurbished computer first because this computer has no added Programs or HP driver updates added to it. Will the restore media created on this computer (if it is possible) also work on the other HP EliteBook 840 G2 Computer, or
should I create a second restore thumb drive for this computer too?

If I create one on the first computer, which has programs added, should I delete them before starting?

Very little is in the small amount of literature that came with these computers, and the HP online manuals are for new computers.

Thank you for your help.

 

hp password

forgot my hp elitebook 840 g2 password