installed el capitan and the key board does not work with windows 7 in boot camp

Same here with windows 8.1!!! It seems to be a driver problem. Arrghhh

This worked for me. http://davemeehan.com/technology/how-to-reset-an-apple-wireless-bluetooth-keyboa rd-mouse-or-trackpad

No way for me. Windows Error message "The device can not be started (Code10)".

I had the same problem, just updated to El Capitan and when i boot to windows the bluetooth doesn't work.

iMac (27-inch, Late2013) Version 10.11

Same here. Its not possible to install the driver updates for PC because i can type anything to log in to my account.

i found this, but it's not working for me 😟.Apple wireless keyboard can't use with boot camp Windows 7 after upgrade El Capitan

Please find a wired USB keyboard/mouse. Check if you can boot in Windows Safe Mode with a working wired keyboard/mouse.

I have the same problem. If your mouse works, you can use the on-screen keyboard to try out different potential solutions in Windows, but I have not found any solution to this problem. I have tried to update all the bootcamp drivers, but this had no effect. I also tried to update all out-of-date drivers on windows, with no effect. I also plugged in another Windows keyboard, not through bluetooth, and again none of the keystrokes register, although the special keys for opening up mail etc works fine, so obviously the keyboard is somehow recognised by Windows.

This is incredibly frustrating.

Can you try the following two steps and test?

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

How to Reset NVRAM on your Mac - Apple Support

I had this this morning, was quite a simple fix though:

- Go into Bootcamp on your Mac and download/install the latest Bootcamp drivers for Windows onto a USB.

- Restart on the Windows side, log in using the on-screen keyboard (accessible from the bottom left of the log-in screen via Ease of Access Centre icon)

- Open the USB you loaded the drivers onto, navigate to D:\Bootcamp\Setup.exe and run the file. Restart into Windows and it should be working again.

As mentioned in my post, I tried this as well (twice) and in my case it did not solve the problem.

Can you manually run

AppleKeyboardInstaller64.exe

AppleWirelessMouse64.exe

AppleWirelessTrackpad64.exe

AppleMultiTouchTrackPadInstaller64.exe

and test?

Thanks for all your suggestions. I have tried them, but unfortunately still the same situation. Just to be clear, the keyboard works perfectly fine when using El Capitan on the same computer, it is only when rebooting using Windows 7 that the keyboard does not work.