Hey guys, some problem with an asus laptop

I just bought an asus laptop and it have endless os preinstalled. I got a windows CD too for it.
I’m a noob and i just want to uninstall it and put the windows.
Some help, please?

I have to mention that i tried everything in bios and nothing.

@Stefan03
https://support.microsoft.com/pt-br/products/windows?os=windows-10