MSI Z97-Gaming 5 stuck at debug code 51-55

Yitian

Distinguished
Jun 8, 2016
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I recently built a MSI Z97-Gaming 5 computer. Full specs are here:

MOBO: MSI Z97-Gaming 5
CPU: Intel Core i7-4790k
CPU Fan: Cooler Master Hyper 212 Evo
RAM: Ballistix 2-8GB DDR3-1600 UDIMM 1.5v
GPU: EVGA GeForce GTX 970
Power supply: Corsair CX600M Modular Series

When I boot up the computer and connect it to a screen, the screen shows that no signal is detected. On the MOBO, the debug codes keep jumping between 51,52,53,54 and 55, most of the time stopping on 51-54. I have checked Tom's checklist and made sure everything is in check, I have tried slotting the RAM chip into different slots and trying with only 1 RAM chip in different slots. I have also tried slotting the GPU into the different PCI-e slots that the MOBO has, I have made sure everything is tightly plugged in. Also another wierd thing, the cooling fan on my GPU starts up as I open my computer, but after a while it stops spinning. I don't know what's wrong. Also, I noticed that on the wire which I use to plug into my GPU, there is an extra 4-pin plug at the end, and I cannot find anywhere on my MOBO to connect it. I also tried swapping that wire setup with another PCI-e wire, but same thing happens. I seriously don't know what's wrong at this point.
I have checked that debug codes 50-55 means that there is something wrong with the memory initialization.