Where's the Asus rog gl572 power button?

Solution
GL752

Start button:

As far as I can tell from the manufacturer's pics, it's at the far-right of the top row of keys, (the last key on that row).

(There's no '572' model as far as I know, didn't come up when searching)

Edit: KerryT beat me to it - dang! :bounce:
You mean the Asus 752 right? That's the one I'm getting on Google.

Laptop manufacturers usually put their buttons in the keyboard nowadays, it's on the top right corner.