Boot to windows with alternative keyboard

[Fietsbel]

Hi,

I have managed to install windows via bootcamp, all is fine. My apple wireless keyboard broke down and i bought a Razer Blackwidow keyboard. But for some reason i can't get into windows anymore because i don;t have the Option key. I tried the ALT, Windows key and CTRL key, but with no result, i end up booting in Mac osX

I downloaded an app to be able to switch between them, but does anyone know what key combination i have to use at the start to boot directly into windows?

 

[Intell]

Alt is the correct key to use when using a non-Apple keyboard.

 

[Fietsbel]

For some reason it doesn't work for me, i press and holt ALT when i hear the boot sound, but i end up in macosx

 

[Intell]

It is a wired or Bluetooth keyboard?

 

[Fietsbel]

It is a wired or Bluetooth keyboard?

It is a wired keyboard.
I also tried to hold the key before the bootsound, but that didn't helped either. I'm so confused why it is not working