My PC shuts off randomly after installing new water cooling

[luislunamax]

I bought a Corsair H80i v2 water cooling system for my pc since my stock fan wouldn't cool my CPU very well. I installed the water cooling system and turn on the PC and it was going well. I went through through the bios and into windows but right after signing in windows my pc would shut off. The fans run but I don't hear the pump. After that I turned it back on then it shuts off. It sometimes last for 3 minutes turned on and then it shuts off. I've tried going to the bios and turn off the CPU_Fan so that the water cooling can get enough volts but still turns off. I don't know what to do please help.
My specs are
Motherboard: Asus M5A78L-M USB3
CPU: AMD FX-6300 3.5 GHz
RAM: Viper Patriot 2x4 GB
GPU: EVGA GeForce GTX 1050 2 GB
PSU: Cooler Master Elite 550
HDD: 160 GB WD

Please Help

 

[lumineZ]

First I got to ask. You are 100% sure that everything is plugged in correct. If yes then fine.

Are you 100% sure the pump is running? if you are unsure you can try and put a finger on it and see if you can feel a small vibration, if you cant then you take a screwdriver. Put the metal tip onto the pump area and place your ear onto the handle, and you should hear if the pump is making a sound or not.

There is a possibility that the pump was defective from the start as that can happen.