this post was submitted on 09 Dec 2023
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PC Master Race

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What happens if you turn on the PC without plugging the power cable for the GPU? (lemmy.world)
submitted 2 years ago by 0Xero0@lemmy.world to c/pcmasterrace@lemmy.world
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So I was changing the case fans, after I put everything back together, I forgot to plug in the power for the GPU. I turned the pc on and I saw the white LED on GPU power port lid up and heard the fan spins like crazy (I don't know if it was the CPU fan or the GPU fans), I panicked and immediately turned off the power supply.

Everything happened in less than 2 seconds, I've run some stress tests and gamed for a few hours and nothing bad happened (yet?) so I assumed everything is still fine (for now?).

What happens if I had left it on like that for longer? And why did the fan ram up like that?

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[โ€“] n3m37h@lemmy.world 1 points 2 years ago

Modern computer parts are made with safety checks. If you dont have the power plugged it it will pause on the initialization page and state that you need to plug your GPU in. Remember doing this with a 660TI

[โ€“] Caligvla@lemmy.dbzer0.com 1 points 2 years ago

I can answer that because I've done this multiple times by accident... Nothing happens, don't worry about it.