Wow, thanks for the elaborate reply! I find it very interesting.

I'll write at least a bit more in-depth reply later, but first: , , , , , , , , , , and

(forum policy only allows me to give you 12 hugs; I counted 14, so I am sorry to short-change you; but quality over quantity: always.)

No worries about understanding the theory: that's all me, most probably. Story of my life. I will keep trying (and make it more phone-compatible shorter).

Good luck with fixing your computer. You can do it!