boot up problems w/ first pc build

BattleBorn767

Reputable
Aug 3, 2015
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Hi, I decided to try and build a computer myself from the Axion pc build from Austin Evans youtube channel. the build consists of the case being the Fractal Core 1100 with a 120 mm fan, the motherboard being an msi H81M-E34, the power supply is a Corsair CX 430, a 1 TB Western Digital Blue hard drive, an Intel Pentium G3258 processor, an 8GB ballistix memory card, and an msi R7 250X graphics card. after multiple attempts at the wiring, only the fans run for a few seconds when I boot it up before shutting off. does anyone know what I have done wrong?