PC Restarts before BIOS screen in a loop

NinjaKolla

Honorable
Mar 28, 2012
25
0
10,530
When I turn on my PC, right after 2 seconds it shuts itself down and after another 2 seconds starts itself back up and then restarts again in a continuous loop until I unplug it from the socket. The screen is completely black and it doesn't even show the BIOS logo screen or any error message.

I had the same problem about 2 months ago but it happened only for 1 day, somehow got itself fixed and worked flawlessly until now.

My PC specifications: (PC is just 1 year old, except the PSU)
Intel Core i5 4570
1 stick of Kingston 8GB 1600MHz Value Ram
Gigabyte Sniper B5 motherboard
MSI GTX 760 graphics card
Coolermaster GX 550W Bronze (3 years old)

As you can see, I don't have any overclocked stuff. Everything is on stock numbers.

Am I having a PSU problem or is this a motherboard problem?