I used to have nightmares about my PS2 being evil. Completely loving serious. There were two types of dreams that I usually had.
The first one was very basic. The PS2 wouldn't shut off, or I would cut it off and it would turn back on by itself. These dreams typically focused on the PS2 and only the PS2, and was almost always the same location.
The second is kind of an evolution of the first. The console won't shut off, but this time there's a twist. I'll try to recount it the best I can:
It always started the same way. I'm in my room, doing something with the console. A yellow menu comes up, a menu I don't believe actually exists. This menu was probably the most horrifying thing in the whole dream. It wasn't the menu itself, but more the fact that when the menu appeared, I knew I was having that nightmare again. I can't remember what the menu says at all (I don't think I ever really knew), but it was most likely some kind of prompt telling me what was about to happen and why. Maybe the console would have bricked if I didn't comply. Or maybe it was just some sort of system options menu my mind made up.
Then some game started. I don't know what game it was, or if it was a real game, but it was the same game every time. I had no choice but to play it. I couldn't move no matter how much I tried. It was a colorful game, with a third person camera. I think I remember climbing something at some point in the game, so it was probably a platformer. The yellow menu must have been a warning that I would be playing this, and probably stated why I had to. Not that I had a choice in the matter, being kept from moving and all.
I was always in the same room. In the same spot. Looking at the same menu. Playing the same game. It was horrifying to me, for some reason. I had them a lot when I was younger, but at some point they slowed down. I had started playing PC games more at this point. Then they just randomly flared up again, exactly the same as before. I actually wanted to trash the thing. I begged my mom to throw it away, or sell it, or maybe even move it to another room. She just told me to start unplugging it, which I did. I don't actually remember if it helped or not, but that's besides the point. I legitimately believed my PS2 was causing the dreams.
Then, one Christmas, I got a PS3. I no longer wanted my PS2, thinking, hey, I got the upgrade, don't need this old thing anymore. I ended up giving it to my uncle, since he wanted it (he sold most of the games, and I don't even know if he has it anymore). Then the dreams just kinda stopped. Never had them since.
The strange thing is, I've had my GF's PS2 for a while now (wish I still had my old games), and I still haven't had a single one of these nightmares. I would think getting another PS2 would trigger bad memories, but nothing has happened. Whatever, I guess.