@yankikkie I can help you get your graphics card recognized if you want, but it's unlikely that has anything to do with your save not loading. All it would do is tell the game what default profile to use for your card. If you want to try anyway, please post the section of deviceconfig between "Graphics device info" (about 25 lines down) and "Options" (about 40 lines down). I'll write out the lines you need to add.
What's more likely to help is trying to load the save in a clean user data folder. Move your entire Sims 3 folder out of Documents\Electronic Arts and onto your desktop, and when you launch the game, a clean folder will spawn with no content. Please try starting a new save, just to make sure it works; if it does, you don't need to play it, just quit and then copy over the backup version of your existing save, nothing else. Let me know whether it loads.
While having a dedicated graphics card is generally better than not, an Intel UHD 630 is actually something like 500% faster than an Nvidia GT 210. The 210 is over a decade old and was never all that fast to begin with, and while a UHD 630 isn't going to run the game on anything resembling ultra settings, it does run it. If you did want to add a dedicated card to this computer, which may be but is not certainly possible, it would be better to get something resembling a modern card, but of course that would cost money, maybe $150 U.S. (or a bit higher in other countries) for an entry-level gaming card.
It would be nice to know the defaults, I'll leave them at the end of this reply. And the backup file won't load again even if I try the method you said...
Also I thought so too, using the old one is not a good idea comparing to the new one even if it's onboard, but I just worried because of the things i read there. Then, I'll continue to use UHD 630 for now.
=== Graphics device info ===
Number: 0
Name (driver): Intel(R) UHD Graphics 630
Name (database): Intel(R) UHD Graphics 630 [Found: 0, Matched: 1]
Vendor: Intel
Chipset: Vendor: 8086, Device: 3e91, Board: 317617aa, Chipset: 0000
Driver: igdumdim32.dll, Version: 26.20.100.6860, GUID: D7B78E66-7DD1-11CF-D66E-1211BBC2D735
Driver version: 6860
Monitor: \\.\DISPLAY1
Texture memory: 32MB <<OVERRIDE>>
Vertex program: 3.0
Pixel program: 3.0
Hardware TnL: 1
=== Options ===
AnimationSmoothing 1
LightingQuality 1
GeneralReflections 0
TextureQuality 1
VisualEffects 1
TerrainQuality 1
EdgeSmoothing 0
ObjectHiding 1
AspectRatio 0
ForceSquarePixels 1
SimQuality 1
TreeQuality 1
DrawDistance 1
MaxActiveLots 1
NumMaxActiveLotOptions 6
AdvancedRendering 0
AudioQuality 3
Audi🤭utputMode 1
VoiceLevel 255
SoundFXLevel 255
MusicLevel 255
AmbientLevel 255
FocusMute 1
VoiceMute 0
SoundFXMute 0
MusicMute 0
AmbientMute 0
EdgeScrolling 1
EdgeScrollingWarning 0
SupressOpportunityDialogs 0
SuppressOpportunityDialogsWarningProducts 51753
SimWhileMinimized 0
TwelveHourClock 1
ShowPlacementGrid 0
AutonomyLevel 2
DisableAutonomyForSelectedSim 0
PetAutonomyLevel 2
AgingInterval 2
EnableAging 1
EnableTutorial 1
EnableIntroTutorial 0
EnableTombResets 1
EnableInGameStore 1
EnableTelemetry 1
EnableMemories 1
AgingStageLengthBaby 3
AgingStageLengthToddler 7
AgingStageLengthChild 7
AgingStageLengthTeen 14
AgingStageLengthYoungAdult 21
AgingStageLengthAdult 21
AgingStageLengthElder 17
EnableInteractiveLoading 1
AgingStageLengthPuppy 0
AgingStageLengthDogAdult 0
AgingStageLengthDogElder 0
AgingStageLengthKitten 0
AgingStageLengthCatAdult 0
AgingStageLengthCatElder 0
AgingStageLengthFoal 0
AgingStageLengthHorseAdult 0
AgingStageLengthHorseElder 0
LunarCycleLength 3
LunarPhaseLength 0
EnableLunarCycle 1
EnableLunarPhase 0
EnableStoryProgression 1
EnableVampires 1
EnableWerewolves 1
EnablePets 1
EnableCelebrities 1
EnableFairies 1
EnableWitches 1
EnableHorses 1
EnableOptOutCeleb 0
ReceiveConnectTNS 1
ReceivedDevGift 0
PostFilterFlags 0
RequireLoginBeforeLoad 1
SummerLength 7
FallLength 7
WinterLength 7
SpringLength 7
SummerEnabled 1
FallEnabled 1
WinterEnabled 1
SpringEnabled 1
IsCelcius 0
FogEnabled 1
RainEnabled 1
SnowEnabled 1
HailEnabled 1
InvertHorizontalRotation 0
InvertVerticalRotation 0
VideoCaptureSize 1
VideoCaptureQuality 2
VideoCaptureSound 0
VideoCaptureTime 60
VideoCaptureHideUI 1
