Thanks for joining the Graphics community.
I just tested the latest video drivers on same graphics controller, I even disabled "Choose when to turn off the display" under control panel and the screen stayed on all the time.
I would say if your computer screen turns off even if that is disabled, this has to come from your computer manufacturer BIOS.
Thanks for your reply.
I got back to Windows from Ubuntu today and found out that the problem was gone. I checked the settings again and found nothing different. I guess I should have rebooted my computer more, haha. Anyway, thank you for your attention.
You are welcome, I am glad your computer is working again.