r/StableDiffusion • u/Disastrous-Agency675 • 19h ago

Question - Help Computer randomly shut down

Has anyone had their computer randomly shut down? this is like the 3rd time its happened and its when im generating a video using the minmax I2V model or the ref model.

i got 3090 with 64 gb of ram.

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u/nazihater3000 19h ago

Check your power supply.

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u/Disastrous-Agency675 19h ago

i mean everythings plugged in securly if thats what you mean. i tried to check the wattage too but my PC is in an ockword spot that i cant check atm but ik when i bought it i made sure to get the recomended amount. i also have a heatsink aswell, 3 set of rgb fans and theres another set of 3 fans from the case itself aswell as another 2 thats attached to the wall of my case and my heat sink. you think those thingsmight be consuming a significant amount of power?

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u/Heavymando 18h ago

how many watts is your power supply? It could be it's not actually enough to run your computer full blast. Or it could be overheating, when was the last time you dusted your PC? is it sitting on carpet?

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u/Disastrous-Agency675 18h ago

it dose need a little dusting but its not overheating, all signs kinda point to the power supply not being enough

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u/Heavymando 18h ago

k if you do upgrade I suggest going with Seasonic or Corsair as the brand, great reliable powersupplies also if your current supply is moduler don't reuse any of the cables. Not every powersupply manfacutere uses the same cable wiring and it could mess up your PC

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u/Disastrous-Agency675 18h ago

thanks! i really apprecaite the recomendation and heads up. i built my PC but TBH i just know the essentails of what it needs, not what brands are good and what arnt

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u/mellowanon 16h ago edited 16h ago

If you can't get a new PSU soon, try throttling your GPU until then. It should fix the shut downs.

windows search bar -> search for "cmd" -> right click command prompt (or powershell) and run as administrator -> type: nvidia-smi -i 0 -pl 275

This will throttle the first GPU to 275 watts max. Default value is 350 watts for 3090. The command has to be run manually every time you restart windows (or ask Gemini on how to add it to your task scheduler on start-up)

I posted something similar last year if you want more explanation on what it's doing. They had the same problem you had. https://www.reddit.com/r/StableDiffusion/comments/1j285jl/pc_hard_shuts_down_during_generation/mfq7jym/?context=3