Question My Motherboard Lights Up But PC Doesn’t Turn On.

Mar 10, 2019
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I am building my first pc but had help from someone who has built a pc before. I am using an ASUS b450 prime motherboard and a ryzen 5. When I plug in the pc and turn the power supply on, the lights on the motherboard light up but none of the fans turn on and nothing comes up on the screen. I have no clue what to do. I tried making sure that the case power, reset, and those super small pins are plugged in right. I consulted ASUS and have it right now but still no fans spinning or any action except the lights on the motherboard. I know the power supply works because of the motherboard lights and that is the main answer in the internet to test the power supply. Does anyone have any other suggestions?
 
Mar 10, 2019
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5 2600
ASUS Prime B450-Plus
2x8 gig Corsair vengeance ram
Western Digital 3.5 Tb Hardrive
EVGA - SuperNOVA G2 750 W 80+ Gold Certified Fully-Modular ATX Power Supply

CoolerMaster Master box pro 5
MSI 1060
 
Feb 14, 2019
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This may be an obvious question, but you have the 24 pin and 8 pin connectors both plugged in, and the 8 pin is going to right port on the PSU also?
 
Mar 10, 2019
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I have both the 8 pin and the 24 pin both plugged in. I tried the 8 pin in both cpu 1 and cpu 2 on the psu. I also tried 2 different 8 pin wires and fliped them both around different ways because I didn't know if it matter which side the split 8 pin connector should be on.
 
Feb 14, 2019
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I'd try reseating the Memory and all cables (though I imagine you've already done this several times).

On the off chance, are you using the stock CPU cooler or an AIO?
 

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