Grub 2 does not show up on startup

I recently created a partition on my HP Pavilon laptop with an Ubuntu version on it. But now when I start the laptop first the HP logo appears and then it boots straight into Windows 10 without showing grub. I am able to press F9 and then boot straight from there into “ubuntu” which leads me to grub from where I can choose either to boot into windows or into Ubuntu. I am also able to boot into grub (and thus into Ubuntu) via “advanced setup options” when I’m on windows. Nevertheless I would like to have grub immediately show up on any startup of the laptop (not booting directely into either operating system).