@mayuutann I remember we talked about this once before... I would say it depends what is the unknown part:
"try to reboot" - I don't know if I am able to reboot, like maybe I press Ctrl-Alt-Del and nothing happens
"try rebooting" - I know I can reboot, but I don't know if it will have the result I want, like maybe I do the reboot and my mouse driver still doesn't work