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why is my 700w power supply not working with my new rig?

Last response: in Components
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November 17, 2013 6:46:41 PM

i have a corsair gs700 power supply i am building a new rig and i got everything put together and hit the power but all i get is a green led on the motherboard the fans dont come on and it dosent boot im running a gtx 780 and a sabertooth motherboard with an i7-2600s the power supply works when i put it back in my old setup however when my patience wore out i tried putting my 780 in my old setup and i got the hp start screen then a single short beep code which to my understanding means there is a psu issue and it wouldnt boot it is there something wrong with my psu or do i just need more power?
a c 1969 ) Power supply
a c 1075 V Motherboard
November 17, 2013 6:49:39 PM

You have more than enough power , might be defective , RMA it.
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a b V Motherboard
November 17, 2013 6:50:46 PM

700 watts should be enough...maybe a bad 780 is my guess
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November 17, 2013 7:33:19 PM

when i plugged the 780 into my old setup it lit up and the fan started im thinking it might be a problem with my new sabertooth being stuck in stand by mode somehow this is my first build so please excuse my ignorance if this is way off
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Best solution

a b V Motherboard
November 17, 2013 8:22:42 PM

there might be something in the bios I know I had an hp once that you had to change some stuff in the bios to get it to read a gpu...some kind of lock out or some shit.
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