Angels have the Phone Box
Yes,....which can be a good thing and a bad thing because some people have had problems with Windows updating drivers that people didn't want updated....but that's not something you have to worry about. Your system came with Windows 10, so it was built for Windows 10 and not "updated" from Windows 7 or Windows 8.x (which is where some people have run into driver problems). So, you have nothing to worry about.
Um...no. Did someone say something to concern you about this? Not to worry. Even if for some reason ASUS had forgotten to install your monitor drivers before you bought your system, Windows has a generic driver which would be auto-installed - you'd have to have some graphics driver in order for you to see your screen!
Yep, eye strain is just something you have to be aware of for yourself. Everyone is different - depends on the brightness of your screen, the brightness of the room you're in, etc.
Please go ahead and mark the thread solved, if you are satisfied.
Have fun with Windows 10!