[SOLVED] Installed a new 600 watt EVGA power supply, computer will no longer turn on

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I pulled my old 850 EVGA power supply and put it into my new computer that I built. To make my old computer more sellable to maybe someone who just needs a desktop for light use, I bought an inexpensive 600 watt EVGA power supply. The old computer doesn't even have a videocard in it anymore but it does have on board graphics via the CPU. Hardware-wise nothing has changed in the computer. When I press the power button, the computer lights up for a second and then turns off. I made sure to use all of the cables that came with the new PSU. Thinking it was a bad PSU I exchanged it for a replacement of the same brand and model. Same issue.

If I had a theory I noticed that the CPU connection might be the issue. You know how the plug has a bunch of squares and rounded squares in a grid shape? The CPU ports appear to be different than the ones that are provided with the PSU. See the two links below:
https://ibb.co/Z6Bs1z3

This is the PSU I bought: https://www.amazon.com/gp/product/B07DTP6QKG/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

This is the hardware currently inside:

This is the hardware currently inside:
G.SKILL Ripjaws X Series 16GB (4 x 4GB) 240-Pin DDR3 SDRAM DDR3 1866 (PC3 14900) Desktop Memory Model F3-14900CL9Q-16GBXL

ASUS P8Z77-V PRO LGA 1155 Intel Z77 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard

Intel Core i7-3770K Ivy Bridge Quad-Core 3.5GHz (3.9GHz Turbo) LGA 1155 77W BX80637I73770K Desktop Processor Intel HD Graphics 4000

Cooler Master Hyper 212 Evo CPU Cooler, 4 CDC Heatpipes, 120mm PWM Fan, Aluminum Fins for AMD Ryzen/Intel LGA1200/1151

Corsair Carbide Series 400R Graphite Grey and Black ATX Mid Tower Gaming Case
 
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I pulled my old 850 EVGA power supply and put it into my new computer that I built. To make my old computer more sellable to maybe someone who just needs a desktop for light use, I bought an inexpensive 600 watt EVGA power supply. The old computer doesn't even have a videocard in it anymore but it does have on board graphics via the CPU. Hardware-wise nothing has changed in the computer. When I press the power button, the computer lights up for a second and then turns off. I made sure to use all of the cables that came with the new PSU. Thinking it was a bad PSU I exchanged it for a replacement of the same brand and model. Same issue.

If I had a theory I noticed that the CPU connection might be the issue. You know how the plug has a bunch of squares and rounded squares in a grid shape? The CPU ports appear to be different than the ones that are provided with the PSU. See the two links below:
https://ibb.co/Z6Bs1z3

This is the PSU I bought: https://www.amazon.com/gp/product/B07DTP6QKG/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

This is the hardware currently inside:

This is the hardware currently inside:
G.SKILL Ripjaws X Series 16GB (4 x 4GB) 240-Pin DDR3 SDRAM DDR3 1866 (PC3 14900) Desktop Memory Model F3-14900CL9Q-16GBXL

ASUS P8Z77-V PRO LGA 1155 Intel Z77 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard

Intel Core i7-3770K Ivy Bridge Quad-Core 3.5GHz (3.9GHz Turbo) LGA 1155 77W BX80637I73770K Desktop Processor Intel HD Graphics 4000

Cooler Master Hyper 212 Evo CPU Cooler, 4 CDC Heatpipes, 120mm PWM Fan, Aluminum Fins for AMD Ryzen/Intel LGA1200/1151

Corsair Carbide Series 400R Graphite Grey and Black ATX Mid Tower Gaming Case
Are you sure your not using the pcie plug? They maybe be 4 pin pcie not CPU
 
There's only 1x 4+4pin EPS/CPU. There are No 4pin pcie.

The 4+4 should be keyed, right on the connector. You'll need to slide them together to make up the 8pin for the motherboard. It only fits in 1 way, the tabs go down to match the latch. They do fit the motherboard but might be stiff as the pins are new and need a little force to seperate
 
There's only 1x 4+4pin EPS/CPU. There are No 4pin pcie.

The 4+4 should be keyed, right on the connector. You'll need to slide them together to make up the 8pin for the motherboard. It only fits in 1 way, the tabs go down to match the latch. They do fit the motherboard but might be stiff as the pins are new and need a little force to seperate

The main port (the larger one with the keyed section that connects to it) for the motherboard was connected correctly.
 
The EPS / CPU is the 4+4. The one in the picture. That's the one that goes to that circled port in the second picture. It's necessary. They are also keyed like the main 20+4, so must be put together as well. They fit just like the mains 20+4 in that the tabs on the one side go to the lock on the port.

Don't worry about if they look slightly different to the port, a D will fit into a Square hole, but a Square will not fit into a D hole. So it'll only go in 1 way, but will be snug for the first fitting as the male and female sides need to align correctly and spread or angle to fit.
 
Which EVGA 600W?

I'm guessing the W1, which could be why you're having issues. Those PSUs are absolutely horrible.


This is the one I bought:
EVGA 600 BR, 80+ Bronze 600W, 3 Year Warranty, Power Supply 100- BR-0600-K1


Is there one that you recommend that is not too expensive? Trying to sell the computer. Don't need a PSU for gaming. Just good enough for regular PC usage.
 
The EPS / CPU is the 4+4. The one in the picture. That's the one that goes to that circled port in the second picture. It's necessary. They are also keyed like the main 20+4, so must be put together as well. They fit just like the mains 20+4 in that the tabs on the one side go to the lock on the port.

Don't worry about if they look slightly different to the port, a D will fit into a Square hole, but a Square will not fit into a D hole. So it'll only go in 1 way, but will be snug for the first fitting as the male and female sides need to align correctly and spread or angle to fit.

I already installed the both CPU sections into the yellow circled port and got the same issue.
 
The EVGA BR series is low end, but a BR600 shouldn't have an issue with your pc without a graphics card. I have used several BR units and haven't encountered problems.

Can you show us a picture of the inside of your case, showing most of where the connectors are plugged in?

Also, another thing to test is the unit itself. An EVGA BR should come with a plug which when plugged into the 24 pin tells the PSU to turn on. With the PSU removed from the PC, if you plug this in and turn the PSU on (via switch) does the fan spin?