They do but ram is like the easiest thing to install
Yes they do. You have to buy the part and I think they put it at no charge. At least when I did my son's laptop I had to just pay for each ram.
Yeah there's a whole customer service where they can help install parts into your PC, I unfortunately don't know how much they would charge or if they would charge you. I had a similar-ish thing where I wanted to see if my CPU died on me or not and they tested it for me free of charge
Yes, there is a customer service center in the store where they do things like install the ram.
Yes most certainly
Yes they do.
Yes, you can pay them to do it for you
Thanks! Your answer is awaiting moderation.