First time poster here! I've been lurking for a while, and figured you folks might be knowledgeable enough to try and find the cause of my issue.
I have a HP 15-ay105np laptop with an Intel Core i7 7500U and when I install Windows 7, it just simply doesn't show two important drivers in Device Manager: Realtek Bluetooth and the HP Wireless Button drivers:

On the other hand, Windows 8.1 and Windows 7 show those devices just fine!

I think this might have something to do with HID or I2C devices... not sure. Of course in the HP website it only displays Windows 10 drivers.
I was wondering if you know why this is happening and if there's any way to solve it.
Thanks for the attention

Here are the Hardware IDs of the missing devices:
HP Wireless Button: ACPI\VEN_HPQ&DEV_6001
Wireless Compatible Controls with HID(?): ACPI\VEN_HPQ&DEV_6001*
Realtek Bluetooth 4.0 Adapter: USB\VID_0BDA&PID_B008&REV_0200

*in portuguese its: "Controlos de rádio sem fios compatíveis com HID"

Zitat von Fernando im Beitrag #2

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@the_soft45:
Welcome to the Win-RAID Forum!
The Device Manager usually doesn't show all devices, which were recognized while booting.
To see all devices, you have to hit onto the "View" tab of the Menu bar and to choose the option "Show hidden devices".
Regards
Dieter (alias Fernando)

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I've used DevCon.exe from the Windows Driver Kit to enumerate all of the HW IDs of my laptop on Windows 7, and it just simply doesn't show the devices I mentioned above...
By comparison, running the same tool on Windows 10 shows everything.
I'm booting Windows 7 from a VHD within Windows 10, BTW, but that doesn't affect anything.
I'll provide the txt with all of the devices generated by DevCon in the attachments.

Zitat von Fernando im Beitrag #4

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@the_soft45:
I do not believe your suspicion, that Windows 7 doesn't detect devices, which are definitively connected with the mainboard. Even Windows XP detects modern hardware and shows them as "Unknown devices", but cannot handle them.

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@Fernando as far as I can tell, the devices do not work on W7
@Mov AX, 0xDEAD I think the Bluetooth functionality is software controlled, not hardware in this laptop's case...
I enabled Bluetooth on Windows 10 and rebooted into Windows 7 and nothing.

Zitat von the_soft45 im Beitrag #8

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@Fernando as far as I can tell, the devices do not work on W7
@Mov AX, 0xDEAD I think the Bluetooth functionality is software controlled, not hardware in this laptop's case...
I enabled Bluetooth on Windows 10 and rebooted into Windows 7 and nothing.

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Zitat von Mov AX, 0xDEAD im Beitrag #9

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can you upload bios ?
i think HP does some tricks with ACPI\VEN_HPQ&DEV_6001 in acpi tables

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Zitat von the_soft45 im Beitrag #10

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I'll leave a link to it. It's the latest one (updated 9th November) and the BIOS files are inside the executable (you can open it with 7-ZIP or similar).

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@Mov AX, 0xDEAD
I only linked to the version HP offers on their website. It there any way to decrypt it?

Zitat von the_soft45 im Beitrag #12

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@Mov AX, 0xDEAD
I only linked to the version HP offers on their website. It there any way to decrypt it?

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Scope (_SB)
    {
        Device (WLBU)
        {
            Name (_HID, EisaId ("HPQ6001"))  // _HID: Hardware ID
            Name (PRSN, 0xFF)
            Method (_STA, 0, NotSerialized)  // _STA: Status
            {
                If ((PRSN == 0xFF))
                {
                    Local0 = Zero
                    ^^PCI0._INI ()
                    If ((OSYS >= 0x07DC))
                    {
                        Local0 = 0x0F
                    }
 
                    PRSN = Local0
                }
 
                Return (PRSN) /* \_SB_.WLBU.PRSN */
            }
 
 

_STA - method STATUS
wlbu - wireless button (?)
PRSN - persistence (?)
OSYS >= 0x07DC mean OS Windows 8+/Win Server 2012+
in case win7(and low) method _STA return PRSN=Local0=Zero, this mean device is not present for OS

I think HP disabled the device because it didn't want to write drivers for win7, the existing driver for win 10 x64 won't work, it's compiled for the new ntoskrnl.exe.
EDIT: But x32 variant may works on win7, but you need patch dsdt table. As i know in checked/debug version of windows 7 exist available to override acpi table by loading binary from registry

@Mov AX, 0xDEAD
Wow, incredible discoveries... I actually found a driver for the HP Wireless Button driver dating all the way back in 2012... maybe that one would work.
BTW, any luck finding the Realtek Bluetooth HWID in there, to see if it's blocked aswell?