Unfortunately, something similar but worse happened to me and it all started after I bought the new game...I have a Lenovo Yoga 920 and I had played Sims 4 on it for an entire year and I was able to use custom content and various mods with the game. I was excited to download the University expansion pack, however, I started to experience blue screens and my computer would constantly restart. It got to the point where I was no longer able to log back on to my computer. Long story short, I took it into various computer repair people and the first one said my hard drive failed, then my CPU on the motherboard failed and I just ended up buying a new computer of the same style.
I have been told the Sims wouldn't have physically been able to break the parts of my other computer, however, I found it was strange after I downloaded the new expansion pack I began getting blue screens after having smoothly played it for a year. With my new computer, I was excited to start playing sims again and downloaded everything the first day I got it and was able to play no problem.
The next day I was just working on my computer and experienced another blue screen. I'm not sure if this is part of another problem, but I immediately uninstalled everything sims because I don't want to have to go through the same process. I'm curious if anyone else is experiencing this, and if so could it be Sims that's causing the problem?
I have been thinking if I should download everything again except for the University Expansion pack but I am scared it might mess with my computer again.