My first computer (1993) was a desktop 486DX with proprietary local bus that ran Windows 3.1. I bought it used off an EE who built it from parts. He had used it for Autocad, which he used for architectural design purposes. He had decided to get a laptop instead. I found it in the classified section of my local newspaper, took the train to his house and talked to him for must have been 2 hours before I bought it, I was a newbie, brought it home on the train.
I found a free computer chess game that I installed on the machine and lost every time I played. I'd regarded that computer as my salvation, my chance to develop the chops to make me eminently employable. However, losing to that machine every time in chess (probably around a dozen games) was giving me the creeps and I started regarding the machine as my adversary. Dark feelings were developing and I stopped playing chess with it, the bad feelings quickly went away. I have never played computer chess since. Was the machine sentient? Of course not, but I had projected negative emotions on it, I couldn't help doing so and had to stop playing chess with it.