It is a huge challenge taking care of things that our H's used to do. But you CAN do it! As suggested, you can take the laptop into a repair place or call the Geek Squad, etc. But if the laptop is really 'his', and you can afford to get a new one, that would be a great way to demonstrate to H that you're getting on with life and you're not going to rely on him for everything anymore.
I also understand the challenge of doing 180's, acting 'as if' when it seems H won't even notice because you're separating right now. That's why everyone encourages making the changes for us not for H. When H comes back around, he will notice. You have to trust that and trust yourself. You are getting occasional emails or text msgs checking on you, which is encouraging IMHO, so use those interactions to demonstrate you're doing well and taking care of yourself just fine!
