Downgrade from Windows 10 to Windows 7

[Paul_Tikkanen]

Hi, @mdj90

You need these drivers for the chipset and pci data acquisition and signal processing controller:

Chipset.  The 2nd file down on the left side of the page is the auto install file.

https://downloadcenter.intel.com/download/20775/Intel-Chipset-Device-Software-INF-Update-Utility-?pr...

PCI Signal...

https://ftp.hp.com/pub/softpaq/sp71001-71500/sp71262.exe

USB3:  Download, unzip and run the setup application...

https://downloadcenter.intel.com/download/22824/Intel-USB-3-0-eXtensible-Host-Controller-Driver-for-...

Ethernet:   Download, unzip and run the setup application from the W7 driver.

https://www.realtek.com/en/component/zoo/category/network-interface-controllers-10-100-1000m-gigabit...

Wifi:

https://downloadcenter.intel.com/download/28277/Intel-PROSet-Wireless-Software-and-Drivers-for-Windo...

Wifi is pretty much a show-stopper for you though. 

Based on its published specs, your notebook most likely has the Intel 3168 AC wifi adapter, and it will not work with W7 installed in legacy mode.

You can see this discussion below regarding this matter.  See Ian50's solution on page 6 of this discussion for how to get the wifi card to work by installing W7 in UEFI mode.  The post that begins...Well, the answer is finally in hand

 https://h30434.www3.hp.com/t5/Notebook-Wireless-and-Networking/Function-Key-not-working-how-to-turn-...

If you want to continue with this endeavor, and you get the wifi to work, let me know, and then I will give you the links to the rest of the drivers you need.

[Lil_Boy_Blue]

Hi

KeyFinderInstaller may help....
https://www.magicaljellybean.com/keyfinder/

Doing research, and none of the methods are mine, I have 3 lines of code that will list the same value for your Windows 10 Product Key…
Two for Windows 10 and one for Linux.   Whether they work in W7, I know not.

W10 Using cmd.exe as an Administrator (copy and paste accordingly).

wmic path softwarelicensingservice get OA3xOriginalProductKey >> c:\ProdKey.txt

Creates a text file called ProdKey.txt on your C:\ area.

Next is a PowerShell command, as Administrator...
(Get-WmiObject -query ‘select * from SoftwareLicensingService’).OA3xOriginalProductKey

but it will run within W10 using cmd.exe as an Administrator.
powershell (Get-WmiObject -query ‘select * from SoftwareLicensingService’).OA3xOriginalProductKey

Last, but not least....
Linux@Lubuntu:~$ sudo cat /sys/firmware/acpi/tables/MSDM | strings | tail -n 1