Q: Keyboard not working in Boot Camp (Windows 10)

1. What year is your iMac?

2. Are your Keypad/Trackpad the newer '2' versions?

3. Are there any Apple entries in Device Manager -> HID?

If your keyboard is not THIS then it is the older v1. You should have Apple drivers under HID.

Your 2011 Mac does not officially support Windows 10. Once you download drivers, you will need to individually install the Keyboard and Mouse drivers. You may need to install then using Admin rights and compatibility mode set to W7/W8+.

Use Install Windows 7 and earlier on your Mac using Boot Camp - Apple Support to locate drivers. These are W7/W8+ drivers, which need to be manually and individually installed.

I've got all the drivers from the bootcamp install on my OSX partition sitting on an external drive.

Bootcamp > Drivers > Apple

Applekeyboardinstaller64 doesn't seem to do anything. Install wizard runs through the motions but there are no more prompts once I confirm the installation. Restart doesn't change anything, apple key, and all the functions on my "F" keys don't work (F12 is F12, not volume up).

What am I missing?

1. Please check for any unknown devices in Device Manager.

2. You can also try

Resetting the System Management Controller (SMC) on your Mac - Apple Support

How to Reset NVRAM on your Mac - Apple Support

and test.

INVESTIGATING THE DEVICE MANAGER:

In the Human Interface Devices there was a Logitech keyboard I haven't had in years, so I uninstalled that.

There are two devices in the "keyboards" flyout, both labeled "HID Keyboard Device".

There's an "Other devices" flyout, which only has a "Bluetooth USB Host Controller" device inside. It's got the yellow triangle with the exclamation mark inside, and it claims it's missing drivers and can't locate them.

I'm using a wireless apple keyboard (no num pad version) and I don't see "Bluetooth" as a device flyout like I see in the image above.

My keyboard works perfectly fine aside from all the apple specific buttons.

Do I need to uninsall those HID Keyboard devices? Do I need to install a bluetooth driver?

Resetting the SMC and NVRAM didn't do anything for me.

Check if BT Collaboration is enabled.

Remove the keyboard batteries and wait a minute before installing them again. In Win 10 go to settings , bluetooth and make sure the keyboard is discoverable. You may need to turn the keyboard on by pushing the switch on the right side of the keyboard. Once the keyboard is detected , enter the code that appears on the screen into the keyboard and press enter. The keyboard will pair.