My Pc won't power up

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Janica05

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Dec 21, 2013
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Processor: Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz
Motherboard: MS-7519
Graphic Card: Palit GeForce GTX 650
RAM: 4GB (2x2gb)
OS: Windows 7 64-bit
PSU: Corsair CX750M (750w)

So I bought a new GPU (Palit GeForce GTX 650) and a new PSU.(Corsair cx750m) I connected my 24 pin ATX main power cable to the motherboard, SATA cables, my 4+4 pin cable for my CPU, 6 pci express connector for my new GPU and some molex for my fans. My PSU is connected on a 220V ac. All seems to be placed in their perspective slots but all that, My PC won't run. I'm not really sure whats wrong :/ maybe a missing wire? I would appreciate all the information, guides and help that i would gather. Thank you and God Bless.
 
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The Letter Mu

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Feb 17, 2014
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If you wanna isolate the power supply, try another one! If the only other one you have is lower wattage, try that one without the GPU. If it works, it's possibly a bad PSU. I've read that the CX series is lower quality than, say, the TX series. If you don't have another power supply to test, try the 20+4-pin connector pins with a multimeter. Black is ground, and there should be three different voltages: 3.3v, 5v, and 12v. If any of these don't show up at all, then it's probably a bad PSU. It's modular so I don't see it being a problem of 115v vs 220v AC.
 
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Janica05

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Dec 21, 2013
35
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10,530


As far as i know, My old PSU works even without a GPU installed. Its a generic type of psu so i decided to change it and for the reason of needing a 6 pin pci for my new GPU.
 
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