Computer turns on and dies but works without gpu

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mahtzaman123

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Jun 26, 2015
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After having spent a night on my computer, I went to bed and turned it off. However when I woke up to turn it on it didn't work. I have tried and tested two PSU and it still turns on for 1 sec and dies or doesn't turn on at all. I have tried a new mobo and that doesn't work. However it does work when I pull out my gpu(gtx 970). What is wrong with it please?

Parts:
Fx 8320
1x4gb ddr3
500watt corsair
Cooler master evo 212
Some gigabyte mobo

*forgot to mention that GPU light and fans flicker
 
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mahtzaman123

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Jun 26, 2015
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I tried another older GPU. Its a really weak one that takes power from the mobo. And it worked with that. If my gtx 970 is broken then I am so fucked. Is there a warranty for it or something. How did it even break. Freaking MSI
 
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Guest

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You probably need to upgrade your power supply. If you're stressing your power supply to the max it can fail over time. How many amps are on the +12V Rail?
 
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mahtzaman123

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Jun 26, 2015
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4,510
Sorry I'm still a new when it comes to computer terms, what's a rail? Plus o dont think ots my psu as my build at max only uses 420, but still i see your point. And ty so much for the help so far guys.
 
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Guest

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A voltage "rail" refers to a single voltage provided by the PSU. You can check how many amps are on your +12V rail by looking at the sticker on the side of your power supply. Most Corsair 500W power supplies only have 34-38 Amps on the +12V rail.

Most GTX 970's require 42A (42 AMPS) on the +12v rails. If your power supply doesn't meet these requirements, the power supply will keep shutting itself down or fail. Even if it worked for a while, it doesn't mean it will keep working.
 
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DSzymborski

DSzymborski

Curmudgeon Pursuivant
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Nov 19, 2010
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As noted above, it could very easily be a power supply that's been stressed for a long period. They all have +12V rails, that's not exactly the question.
 
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