Windows Boot manager has taken over from GRUB, as brahma said Check fast boot is off in your bios, and also when in Manjaro did you do from terminal:
sudo update-grub
Again what brahma said.
@brahma, No, knight is only getting windows boot manager in the bios, then has to press F9 after bios to get into Windows boot Manager (like pressing shift after bios to get GRUB) then select to boot Manjaro.
so in the second picture where there is windows listed first and manjaro second, change the order, so that manjaro is first, save the bios settings, and it should work