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New power supply will not start up

This is a discussion on New power supply will not start up within the RAM and Power Supply Support forums, part of the Tech Support Forum category. I just got a brand new 550W BFG GX series power supply and connected it to the motherboard, cpu, and


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Old 02-04-2009, 03:39 PM   #1
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I just got a brand new 550W BFG GX series power supply and connected it to the motherboard, cpu, and graphics card (currently trying to bench test.) When I hit the power button, it makes a single clicking sound, and an orange light pops up on my motherboard, right above the RAM. My motherboard is an EVGA 780i SLI. Any reason it won't start?
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Old 02-04-2009, 03:59 PM   #2
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If you haven't already, reset or clear your CMOS. Use one stick of ram only. Reboot. Double check all your connections and be sure your CPU and heat sink are secure.
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Old 02-04-2009, 04:03 PM   #3
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If it has 1 check the 115/230 voltage switch is set correctly.
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Old 02-04-2009, 04:19 PM   #4
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It's set to 115... when it was on 230, the lights on the motherboard would just blink on and off. Everything is seated properly, still this small orange light.
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Old 02-04-2009, 04:27 PM   #5
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You say new PSU does your old PSU work?
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Old 02-04-2009, 04:30 PM   #6
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I'm testing a new one since I narrowed my PC troubles down to the PSU when it wouldn't work.
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Old 02-04-2009, 04:46 PM   #7
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How about listing all the specs and a description of the original problem.
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Old 02-04-2009, 04:51 PM   #8
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https://www.techsupportforum.com/f15/...ml#post1907701

Intel dual core 3.0 GHz
nVidia 8800 GTS 512
Corsair Dominator DDR2 ram
550W BFG GX series power supply
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Old 02-04-2009, 04:53 PM   #9
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Have you reset your CMOS for 30 minutes and removed your CMOS battery? PSU unplugged.
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Old 02-04-2009, 04:55 PM   #10
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Can it be a CMOS problem when it won't even boot? I'll try it.
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Old 02-04-2009, 05:00 PM   #11
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I thought your user name looked familiar, Did we decide it wasn't power?
Go through the same steps to test the voltage on the 12v 3.3v and 5v rails > https://www.techsupportforum.com/f210...er-151526.html
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Old 02-04-2009, 05:05 PM   #12
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We decided it wasn't power, but it wasn't the CPU either. Motherboard is new too, and can't get the machine to work any other way. The only possible suspect that hasn't been replaced is the PSU, and I can't even get the new one to start up. Will test the volts, but if it isn't the PSU, then there is no explanation for this problem.
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Old 02-04-2009, 06:00 PM   #13
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Wrench97: I believe I have solved the entire problem... mostly. The USB header had gone out, and now that it's unplugged the POST is working fine again. Only problem now is I can't boot from the drives, but I suspect it's because my machine is in ruins right now. Old power supply even works fine.
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Old 02-05-2009, 12:26 AM   #14
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The front usb header cable or port was shorted?
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Old 02-05-2009, 04:57 AM   #15
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Yeah... the ports had stopped working right before the power went out. Unplugged the cable, and everything works just fine.
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