Windows 8 installed with Boot Camp does not show brightness or volume indicators when function keys are pressed

I just got a new mac computer, installed bootcamp (latest) and win 8. But the brightness, volume keys on the top don't work, the Fn+Delete doesn't delete either.  They used to work just fine in my previous computer which also had win 8 with bootcamp. I am out of sorts, what to do ?
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AleksAsked:
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noxchoGlobal Support CoordinatorCommented:
Have you installed all the drivers?
https://support.apple.com/kb/DL1720?locale=en_US Here are Windows Drivers for Mac computer.

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AleksAuthor Commented:
I downloaded them and tried to install and said those are not the correct drivers for my imac 5k  :$
noxchoGlobal Support CoordinatorCommented:
Have you searched for correct drivers then on www.support.apple.com?
https://support.apple.com/downloads/macoscomponents
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AleksAuthor Commented:
They all give me an error that says the bootcamp is not intended for this version of mac.
noxchoGlobal Support CoordinatorCommented:
Use the Boot Camp Assistant to download latest BootCamp Software.
https://support.apple.com/en-au/HT204048
AleksAuthor Commented:
I already did all this.

https://support.apple.com/en-us/HT201468

There is no link to download bootcamp there.
AleksAuthor Commented:
I downloaded Bootcamp and used the drivers inside and run the keyboard drivers alone (Not all bootcamp), that did the trick.
noxchoGlobal Support CoordinatorCommented:
Thanks for feedback!
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Windows 8

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