Game Crashes Computer?

@ChrinnieSims  When you say your computer resets, what exactly do you mean: does it shut down on its own, does it restart on its own (not the same thing), does it freeze or hang for a while first; or something else?  You said it happens quickly, but is there any pattern to what you're doing in-game when the problem occurs?

For now, the only obviously related error in the dxdiag, as opposed to the ones that don't involve playing TS4, is an error with the Origin Web Helper Service.  It's easy enough to disable though.  In Origin, hover over your username, select Application Settings, and under Application (the first tab), scroll down to Start-up options and disable the web helper.  Then hit Windows key-R and enter "services.msc" without quotes.  Scroll through the list to Origin Web Helper Service, double-click, select "Disabled" under Startup type, and click Apply to save the change.

If this doesn't make a difference, there are some other monitoring tools that look at more than just CPU temperature.  But whether that's the next step depends on what exactly your computer is doing when you try to play TS4.

What I mean by shuts down on its own is.... it just cuts off like the power went out.  It did it twice, but times within 20 minutes of starting to play.  There I am in CAS trying craft the perfect sims and hello darkness my old friend.  Precisely like it would if you'd pressed and held the power button down.  But, it then turns itself back on, like somewhere a reset command was issued.  So I followed the steps.  I did a full uninstall and reinstall.  Same problem.  I did the repair option via Origin and I also did the thing where you go in to Documents and rename the The Sims 4 folder to The Sims 4 backup.  So I loaded up the game and was able to play for a couple hours and leave without an issue.  Later on I went back to create a new game and after two hours it did the same thing where it just cut off and the computer turned itself back on.  Since I do not have this problem doing literally anything else on this computer, coupled with the fact this computer has managed to play TS4 quite easily in the past, the fact the ram was upgraded some months ago from 8GB  to 32GB and all the drivers are up to date, unless someone is using Origin to reset my computer remotely, the only issue I can assume is some conflict between TS4 and the computer.

Anyway, didn't mean to ramble.  I have disabled the Original Web Helper Service, but I have not played the game.  I will do it when I wake up.  I wanted to ensure I answered your question more clearly and gave you all the steps I have taken.

So, I played it, again, for a while.  Then I had it happen again.  Not sure what's causing it.  Though this time I did have Discord running at the same time and I flipped over to it and then it did the shut off and reset.  So, there may be a memory issue?  I don't know about these things, really.  Also, what did you mean when you talked about things not related to TS4 you saw in the DxDiag?

@ChrinnieSims  There are a variety of errors in your dxdiag, some of which clearly reference other apps.  (Scroll down to the bottom of the dxdiag to see.)  The last two Cities Skylines errors may be related to your GPU driver, there's one Nvidia error that doesn't mention a specific game, and a couple of other apps and another game also threw errors.  This doesn't necessarily mean much, especially if the apps are prone to crashing or freezing; the Chrome error just means it was eating memory, as it does.

It's unlikely that Discord would cause a restart if your system was otherwise stable, although the Discord app does seem to slow down TS4 by a significant margin on many systems.  A problem with one of your RAM sticks could explain the crashing, and why it's sporadic, but I wouldn't think Sims 4 would be the only app affected.  Still, it's easy enough to run a basic memory test.

https://docs.microsoft.com/en-us/previous-versions/technet-magazine/ff700221(v=msdn.10)?redirectedfrom=MSDN

If nothing turns up, you can do some hardware monitoring while you play.  The log gets written in real time, so it would be preserved even after a hard restart.  You can look over the log if you want (it opens in Excel but is kind of messy to read), or you can upload it and link it here.  Download hwinfo:

https://www.hwinfo.com/download/

You don't need to install it if you'd prefer not to; just download the portable version, unzip it, and launch it directly from Downloads or wherever you want.  (If you do want to install, be sure to click the green button, not the orange one.)  Open hwinfo, choose "sensors only," click the icon that's a sheet of paper with a + sign to start logging, take note of where the log is being saved, wait five minutes, and open Origin and Sims 4.  For testing purposes, it's best not to have any other apps open, unless you really can play several hours with no problems.

Whenever the game does cause a restart, you can find the log, upload it to a third-party filehosting site, and link it here.  Please leave it in .csv format, or my log reader won't be able to open it.

You are ever so kind.  I didn't read the DxDiag.  Sadly, as is so glaringly obvious, I'm not intelligent when it comes to things I cannot see beyond the screen of the computer.  I have no idea what, exactly, those DxDiag errors are, what they mean, or what could've triggered them to begin with.  And I suppose I may never fully understand what it all means.  However, I have downloaded hwinfo and will run it next time I play the game.  I suspect that I won't have the issue unless Discord or some other program is running simultaneously, but I will see if by normal game play the error can be replicated.  If not, then I may attempt to replicate it using TS4, Origin, and Discord.

Also, should any of those errors cause me concern?  Now I'm all kind of like "I dunno what it means, but it something's broken, I want to have it fixed."

Here's the log.  Programs in use: Chrome, Origin, TS4.

https://www.filehosting.org/file/details/849749/hwlog.CSV

@ChrinnieSims  There's a lot of stuff hidden away in computers that most people never know is there.  I remember the first time I opened the Event Viewer and faced the tsunami of reports.  But in general, if your apps are working, there's no reason to go poking around.

The errors in your dxdiag are all either innocuous or easily solved.  The radar pre leak means Windows found an app leaking memory, but a lot of apps do that, and Windows is merely noticing.  The Origin error you know how to address, although you'll need to reapply the fix any time Origin updates.

The Nvidia error and the driver-related errors are usually solved with a driver update, but given how new your GPU driver is, you might have solved them already.  (The error entries aren't dated in a dxdiag.)  If you want to be thorough, you can do a clean install the next time you update the driver.  Download it manually; disable your antivirus/firewall temporarily, as well as anything else you might have running; launch the installer, and when asked, choose custom mode and perform a clean installation.  That will remove the old driver and associated components, even if the new driver uses the same version of those components.

I took a look at your hwinfo log, and there's no sign of excessively high temps anywhere in your system.  I'm curious though what you were doing in the last five minutes or so before you shut down the monitoring.  There's a significant spike in usage across multiple components five minutes before the log ends, and then the numbers drop.  Also, did your computer restart this time?  And have you overclocked your graphics card?  If so, please undo the settings, at least for now.

Please also let me know what you have for a power supply: manufacturer, wattage, and rating.  If you're not sure, you can just look at the PSU; the relevant info should all be printed on the side.

The last five minutes... I was playing TS4 and needed to research a career.  I looked it up on Carl's Sims guide and was switching the window back from Chrome to TS4 when the crash happened.  Literally the moment I switched from the Chrome window to the TS4 window... poof!.  During that last 5 minutes was when I was buy reading on Carl's website.  And yes it always restarts after the cutoff.  I have not overclocked anything... I don't even know how to do that.  Even if I did, I've heard some not good things about it.

@ChrinnieSims  Okay, thanks.  Before I start wildly speculating, I'm asking for a second opinion on this one.  Your GPU use in particular spiked so much right at that time that it's hard to imagine it's a coincidence, but for specifics, I'd rather have someone else look over the log.

Is this similar to other times your computer has restarted?  As in, if you can remember, were you also switching between the game and Chrome, or even on a particular site (or maybe just one with lots of videos or ads)?  I know Carl's can have some annoying popups if your browser doesn't block them, although for me that site has never crashed anything more than my phone's browser.

Well, I do block popups and I have an ad blocker as well. 

Let me rehash the order things have gone.... forgive my indulgence....

When this all first started, it happened relatively quickly (within 10-20 minutes) of starting TS4.  The first time I was in CAS creating a sim, the second time I was just getting started in the game (I take some time to craft a sim).   I had Chrome and/or Discord running all those times. I couldn't be 100% certain I had or hadn't switched between TS4 and either Chrome or Discord within the 5 minutes before it 'crashed and uncrashed.'  Honestly, the first time it happened I thought it was a power outage because that's how it went... poof.  No warning.  I could only speculate as to where I would've been stopped on the browser prior to the 'crash and uncrash' but I will say that I had to look a few things up I'd forgotten about because it had been a full year since the last time I even opened the game.  So, assuming that TS4 was the most likely cause, or largest contributor to the cause from my standpoint, I instantly came here and read about what to do before you report.  I did a full uninstall and reinstall; same problem.  Then, I went to Origin and repaired the game.  I also edited the TS4 folder so the game would create a new one.  Both of those 'fixes' occurred before I reopened the game.  From that point on, I had a longer period of time.  Then I disabled the Origin Web Service Helper (or whatever it's called) per your instructions.  Since that time, I have only seemed to have the issue if another program is opened simultaneously and I flip between it and TS4.  I have, when nothing else is opened, have been able to play unfettered without the issue.  While I know most will go "don't open anything else while playing from now on," that's not how it used to work.  This isn't the greatest computer, but it's certainly more-than-capable of handling TS4.  And when I used to play it a year ago, I had all the other things on with only 8GB DDR4 RAM at the time.  I'm at 32GB DDR4 these days.

If it's a GPU issue, then that's going to take a while to fix.  As far as what I am using as a power supply, I have no clue and I don't know where the PSU is, but I know a few months ago when I asked about new fans and upgrading the graphics card, I was told that it had to be able to use a 650W supply otherwise I'd have to upgrade.  I'll search and post it below once I find it.