PC automatically booting into windows 10 in dual boot

I have both windows 10 and ubuntu 16 installed on my system.

Lately the system is automatically booting to windows. To boot to ubuntu, I first have to pause startup by pressing escape and then boot into ubuntu.

I know that I have to change the boot order to Ubuntu but am not able to do so and the grub customiser helps to change only the boot order in grub menu to the best of my knowledge.

What should I do? I am unable to find any way to change the boot order in bios

The problem can be resolved by going into the

BIOS -> UEFI Boot Order > OS Boot Manager

The exact wording will vary on different computer makes and models.

Now look for the Ubuntu entry. Select that one and save the settings.