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Mobo not posting, no beeps, no lights on new build

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#1 Source2007


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Posted 16 July 2016 - 08:48 PM

Parts list:

PCPartPicker part list: http://pcpartpicker.com/list/cHqQZ8
Price breakdown by merchant: http://pcpartpicker.com/list/cHqQZ8/by_merchant/

CPU: Intel Core i5-6600K 3.5GHz Quad-Core Processor (Purchased For $201.19) 
CPU Cooler: CRYORIG M9i 48.4 CFM CPU Cooler (Purchased For $21.49) 
Motherboard: Gigabyte GA-Z170XP-SLI ATX LGA1151 Motherboard (Purchased For $107.42) 
Memory: Crucial Ballistix Sport LT 16GB (2 x 8GB) DDR4-2400 Memory (Purchased For $52.07) 
Storage: OCZ TRION 150 240GB 2.5" Solid State Drive (Purchased For $49.90) 
Storage: Hitachi Ultrastar 7K3000 2TB 3.5" 7200RPM Internal Hard Drive (Purchased For $32.39) 
Case: DIYPC D480-BK-Window ATX Mid Tower Case (Purchased For $39.11) 
Power Supply: EVGA SuperNOVA P2 650W 80+ Platinum Certified Fully-Modular ATX Power Supply (Purchased For $87.49) 
Total: $591.06
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-07-16 21:33 EDT-0400

Put everything together and mb didn't post, no beeping, no lights, no sign of life.

Things I've done to diagnose the problem:

I've taken everything out of the case, and am just plugging in parts individually now. These are all new parts, and this is my first build so I'm not too experienced with these things. However, my PSU came with a diagnostic tool (I think it just completes the circuit) to make sure it works. If I connect the 24 pin connector to it, and the power cable to the wall socket, the PSU powers on and the fan spins, so the PSU itself isn't dead. If I then plug in the hard drives and fans they spin, so the PSU and plugs seem to be fine. If I then take all those out, plug the 24 pin connector into the MB and the 8 pin connector into the CPU power slot, then turning on the PSU does nothing. The fan on the PSU does not turn on (which leads me to believe that the circuit isn't even complete) and the mobo doesn't react at all either (I have the onboard speaker that came with the mobo plugged into it).

Some pictures of breadboarding:

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#2 Captain_Chicken


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Posted 21 July 2016 - 09:22 PM

Test your psu first with the paper clip trick:
Straighten out a paper clip. Stick one end into the green wire and bend the other end into one of the black wires next to it. If the psu fan spins up your psu is ok.

Computer Collection:





#3 mjd420nova


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Posted 21 July 2016 - 09:26 PM

I always assemble the bare parts needed, outside the case.  Bare meaning power supply, MOBO, one memory card and video card if not onboard.  That should at least get a BIOS screen.  T/S can then determine the fault.  Most common is incomplete power supply wiring/connectors to the MOBO or plugin video card. 

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