Sorry that you had to reinstall, if you are working with an Origin installation we could have (I should have suggested) a Repair Game first. But hopefully we have a good starting point now. Did you clean the Windows Registry using a tool such as Piriform's CCleaner before reinstalling (hopefully yes)? I would suggest setting aside spare copies of those two sgr files so that when we do get to editing them later on you don't have to go through this again if something should go wrong.
Space is going to be tight on your C drive as it's only 256 GB. Have you installed the game on C or on D? -- it looks like your secondary much larger D drive is mostly unused. It will also be possible to shift your Windows Documents library, so that will include your TS3 and other user game folders over to D, but if C is a Solid State Drive (SSD) you will lose some SSD benefits of TS3 in particular by doing so. When the primary drive is smaller like that it becomes a tradeoff. This is not an immediate issue really, but Windows and the game are going to need at least 35 or 40 GB of free space to maneuver and you are down to 66 GB already.
Your computer has dual graphics. First, unless you have already gone through all of this, we need to specify in the Nvidia Control Panel that TS3 is to use the High Performance card (the Nvidia), not the weaker Intel integrated chip. And while there, Vertical Sync needs to be set in order to help cap the fps as your card is strong enough to throw frame rates that your monitor cannot possibly interpret. Unlike more modern games, TS3 has no functional built-in fps limiter. As the first illustration under the spoiler on this post shows, set up a profile using TS3.exe for Patch 1.69 but TS3w.exe (with the "w") for 1.67.
https://forums.thesims.com/en_US/discussion/comment/16712708/#Comment_16712708
Assuming you can get the game launched, you can check your actual fps with ctrl+shift+C to bring up the cheats console and type fps on (enter). As you play and move the game camera around, to the extent that you can right now, the displayed fps should never exceed the refresh rate of your monitor. Yours is 75 Hz, so that would be 75 fps. To make the display go away, cheats console again and fps off (enter).
Vertical sync as per the above only works in full screen mode. If the Control Panel setting is not enough to lock things in, or if windowed mode is required, then we add Nvidia Inspector and set to explicitly cap the frame rate to in your case 75. (second spoiler illustration on the same page)
Many players on Win 10 find that they do need to stay in windowed mode and Windowed Borderless is the way to go for them.
https://westechsolutions.net/sites/WindowedBorderlessGaming
If you are still getting an all white/grey map after all this (and it's not snowing and really foggy that day I guess if you have Seasons installed), I would begin to suspect your HDMI connection and ask if you have another way to connect your desktop to your monitor such as a standard display port.
Once you've gotten all of that squared away, we can move on to doing some magic with the sgr files to get the Nvidia card formally recognized. But again, the game should be playable without that. Does any of the above help get the game launched and does the DeviceConfig actually contain anything once the above are in place?