I'm glad that you have got a new PC! Yes, I think I was also using the intel internal video card until I wanted to play some games and that wasn't enough and I just bought a graphic card :D
I just tested My Home right now after reading your comment and I can open the level. Are you getting any specific problem? The level might take some seconds to load. Also, this game received a small update in past spring so you are trying it in a good moment :)
I suggest to try again but please tell me if you get any error text or something, I'd like to know, although as I say, I just tested it right now and it works for me. If your pc is new and the other levels work, it must be just a loading issue. Sorry for the inconveniences, and I really appreciate that you keep trying despite all this time and issues!!
I hope you have great fun with your new PC :D