[mmis1000]

My dad exclusively use ie(due to activex/flash in some internal corp site), excel, and word on the laptop I bought for him.

And the only thing he use it for entertainment is browser (for reading novels)

If I am managed to setup all these properly on other system. I doubt him would ever notice a difference.

Non tech user just can't care about what system he is using less. All matter for him are tools that help him to finish his work.

What about dvd/cd or install some new softwares? Well, I am the in house tech support.

[pjmlp]

That is the thing, he only manages that thanks to the in house tech support, he would be lost without it.

[darkwater]

> My dad exclusively use ie(due to activex/flash in some internal corp site), excel, and word on the laptop I bought for him.

That was a majority use-case between 2005-2015. Now it's a niche case (yeah, even if absolute numbers are still big enough, relatively speaking it's a niche)