
NTA
Sounds like he’s heavily on the autistic spectrum, and you may find online resources that handle that to be really useful.
I’m a computer guy, introvert and very much see Z’s point of view. When I go through a difficult time with a partner, I get nervous about any message they send me. I find that if I spend too much time, even with the people I love most, I get absolutely drained and need to run away and hide, often for days at a time. Hell, I even still live with my ex. I see his side.
You’ve tried to do the right thing here by coming forwards and communicating. Any other relationship, that’s gold star behaviour. He, however, was already overloaded from things and needed to quiet the gremlins in his brain before he could have that conversation. As such, raising any issue would likely have set him off. All the voices in his brain are screaming, and you just handed him one more.
To be clear, you still did nothing wrong. In a relationship, you can’t just ignore problems. The issue is that communicating with people like us can be a nightmare.
People like us need a lot of space, and it’s really hard (but important) for us to learn that every communication a proper partner starts with us comes from a place of love. When overwhelmed, we feel attacked by absolutely any comment at all. Even a simple question like if we’re hungry or want anything from the shop can feel like we’re being made to process more burden. Learning how to not see things that way is a skill we simply lack, and need to actively and consciously apply. I often find myself reading a message from my partner, having to stop, change my frame of mind, and start again. I had to learn how to do that.
To help him, when you approach a topic, reassure him as much as you can that he’s not done anything wrong. Tell him he doesn’t have to deal with something straight away. That the two of you can deal with this in your own time, but you want to help both of you be happier by dealing with this problem.
If you want a relationship with him, you’ll need patience, and he will need to learn how to handle his emotions in these situations. It won’t be easy, and he will likely reject help from a councillor or some other person (introvert, remember?) so it will be a very personal battle.
He may also benefit from having an office or man-cave, somewhere that he can retreat to, where you don’t go without a good reason, don’t talk through the door, don’t go in without knocking, and don’t go in without waiting for you to invite him in. Yes, it’s your house too, but this will give him a space to decompress where he doesn’t need to worry about having another person in his space. If you’re really short on space, a screen door dividing up the room may create that space. This will give him a space to quiet the screaming in his brain.
I mentioned online resources at the start of this, and I would highly recommend going through all sorts of material. See what he agrees with, and see what helps you both communicate. Here’s a starting point: https://www.youtube.com/watch?v=y3tTYlPuGH0





I believe you need to uninstall the key from the old device. https://www.tomshardware.com/how-to/transfer-windows-license-to-new-pc
However, if that doesn’t work, you could always install an unlicensed version of Windows, which will have the ‘please activate’ watermark, and then, if you search for ‘Microsoft Activation Scripts’, who knows what GitHub might have.