Question Pc turns on for half a second with 4-pin cpu plugged then turns off

Mar 20, 2019
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Whenever the 4 pin cpu is plugged in the leds and fans work for half a second then everything turns off. whenever it isn't plugged in everything inside turns on with the leds and fans spinning until the pc has been turned off. The pc has never worked or booted up before because of this.
Specs:

Gigabyte Geforce GTX 1050 Ti OC 4GB GDDR5 128 Bit PCI-E Graphic Card (GV-N105TOC-4GD)

EVGA 500 W1, 80+ WHITE 500W

Motherboard H110M PRO-VD Plus

CORSAIR CARBIDE SPEC-01 Mid-Tower Gaming Case, Red LED Fan (CC-9011050-WW)

2x Ballistix Sport LT 4GB Single DDR4 2400 MT

Intel Pentium Gold G5500 Desktop Processor 2 Core 3.8GHz LGA1151 300 Series 54W BX80684G5500
 

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