Computer restarts when playing Sims 4

@mashmusen  I took a look at your log, and some of the data was a bit strange.  Did you start hwinfo before or after you launched the game, and if before, how long did you wait?  How long into this process did your computer restart?  I don't need an exact timeline, but a rough estimate would be great.

I ask because the log has six minutes of readable data followed by a very long list of completely blank entries.  I'm curious whether your computer was running and hwinfo was just not recording data during that time, or whether the restart happened at the point where the readable info cut off, and the extra is just (literally) white noise.

One other detail of note is that your GPU was already running at 58℃ when the hwinfo log started, despite the other internal temperatures being much lower.  This would be totally unremarkable if you were already playing when you launched hwinfo, but potentially an issue if you were not running anything GPU-intensive at the time.  The card's fan also repeatedly started and stopped, which again isn't necessarily an issue under minimal load, but might be an indication of a real problem.

Please let me know about the log, and if you want to do a bit of poking around, please remove all the connectors from the PSU to the other components, make sure there's no dust inside them, and reconnect them.  Take a look at the GPU fan too, just to see if there's anything obvious: does the fan seem to catch when running, does it have excessive dust, etc.  Please also let me know the exact model of graphics card you have, not just that it's a 2070 Super but its manufacturer (if it's a partner card) and model name.

While you're inside the case, look for bulging capacitors on the motherboard.  A new one like yours shouldn't have any issues, but it does occasionally happen.