As I know a bit of your issues before this, I would say that knowing what i do about your H, he is doing this purely out of need to control and dominate you. I'm sorry but I've always seen him this way and this makes it clear. There is much compromise that can be done here and he needs to be willing to make that compromise. He is not the God of the house, the King or ruler but the husband! a month is ridiculous. He acts as though computers are for your entertainment and only for that purpose.
Here is my take on this. He is a controlling person and one thing a controlling and dare I say, abusive person does is isolate the victim(s) from the world. He is threatened by your talking ot other people because he knows you might talk about your issues and this triggers his paranoia and also from his conviction inside that he knows how he treats you is not right.
I mean here's reasonable responses: Why do you want the computer off? Is it because it keeps your wife from giving you attention? Then turn off the computer when you're home. That's reasonable. Is it because your family is too tied into the electronic media? Then turn off the computers, tv and kindles for a couple days a week to have family time. There is no reasonable justification for an entire month of no tv unless it's for the reasons I've posted above or he has a need to "punish" you for some reason, which could quite possibly be it too.
Good luck, I really think that he's hopeless as long as you've talked about this and he keeps returning to this crap. You know what I think >.>
S4