Question Rosewill Prism T500 Fans won’t spin

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The preinstalled fans are connected to a preinstalled fan hub, that only has a power supply connection, (the head that has those 4 large holes) when I turn it on, the LEDs turn on on the fans, but the fans do not spin whatsoever. I really don’t know what to do man, the fan headers connected to the fan hub don’t connect to the system fans on the motherboard. Please help

 

[COLGeek]

Make sure the Molex connectors (what those are called) are firmly connected. Pins can often get misaligned with that connector type, preventing contact and preventing applying power correctly.