I just completed a new build and my computer will not boot when the 4-pin Chassis Fan is connected to the mobo. I get one led flash on the power button and that is all, nothing attempts to run. Unplugged everything runs fine including the 2 case fans, however they run non-stop because they are not attached to the mobo. I also checked for contact shorts and ran the setup outside of the case with the same result. Am I looking at a mobo issue or am I underpowered?
mobo: ASRock Micro ATX H81M-HDS
PSU: Corsair CX 500w
CPU: i7 4790k
Graphics: EVGA GeForce GTX 650 1024MB
SSD: 240 gb Kingston
Ram: 8gb Kingston Hyper X
mobo: ASRock Micro ATX H81M-HDS
PSU: Corsair CX 500w
CPU: i7 4790k
Graphics: EVGA GeForce GTX 650 1024MB
SSD: 240 gb Kingston
Ram: 8gb Kingston Hyper X
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