PC boot loop, bad PSU or other part?

[Johny_Gee]

Hey guys, so I Have a problem. I recently bought some parts to upgrade my pc, the parts that I upgraded were the ram, CPU, and mobo. The Items being

RAM-Kingston RAM 8GB 2133MHz DDR4 CL15 DIMM
CPU-Intel Pentium G4400 3.3Ghz
MOBO-Asus Micro ATX DDR4 LGA 1151 Motherboard H110M-C/CSM

So I put together the PC with the new parts, new ram, mobo, cpu, and the rest of the items were the same. Hardrive, psu, cpu cooler,etc. I only changed 3 things, I swapped the old ram, cpu, mobo to the new ones. After I assembled the computer, I turned it on and everything turned on for 2 seconds then turned off, that happened in sort of like a boot loop until I disconnected the PSU.The occurrence happened in sort of like a loop. I would click the power button, it would turn on for 2 seconds then turn off. It looked like the whole thing was working but i got no post to the monitor. At first, I thought that I had assembled it wrong, so I unplugged everything and started from scratch. Soon after I assembled it for the second time, I tried turning it on and the same thing happened. It turned on, then off, and did that till the power supply was plugged in. then I started to worry that I had bought a Faulty pc part.

After looking up how to test the PSU, I tested it by doing the paper clip trick and it worked fine.

Test 1: I hooked up the 4pin, 20+4 pin to the New mobo, also hooked up the new ram and cpu. Connected the power switch 2pin to the mobo, hooked up the psu to the wall and clicked the power button. Hooked up the dvi to the monitor. And the same thing happened, turned off then on and looped till I disconnected the psu.

Test 2: did the same thing but switched the ram slots and same thing.

Test 3: Did everything the same except take out the one stick of ram, (So no ram in the system) and the loop happens.
(did all testing with stock heatsink)

After all testing, I reconnected my PC specs that I had BEFORE the upgrade and everything worked perfect.
This made me believe that i had a faulty part. Or the PSU is not compatible with the mobo or something.

What I am asking for here is to help me determine What is wrong with my PC, the PSU, or some other part that I bought.

I could also use some tips with testing the mobo, cpu, and ram. I can only use what I have listed because my parents will not allow me to buy another part until I know what is wrong with it and i am 100% sure that that part is bad.

Please help, and thank you for your time.

(computer before upgrade)
CPU- AMD A8-7600 3.1GHz Quad-Core Processor
CPU Cooler-Cooler Master - Hyper T2 54.8 CFM Sleeve Bearing CPU Cooler
Motherboard-Gigabyte - GA-F2A68HM-DS2H Micro ATX FM2+ Motherboard
Memory-Corsair - Vengeance 8GB (2 x 4GB) DDR3-1600 Memory
Storage-Seagate - Barracuda 250GB 3.5" 7200RPM Internal Hard Drive
Video Card-MSI - GeForce GTX 1050 2GB GAMING X 2G Video Card
Case-Corsair - SPEC-01 RED ATX Mid Tower Case
Power Supply- Logisys - 480W ATX Power Supply

(Supposed PC after the upgrade but some part is wrong)
RAM-Kingston RAM 8GB 2133MHz DDR4 CL15 DIMM
CPU-Intel Pentium G4400 3.3Ghz
MOBO-Asus Micro ATX DDR4 LGA 1151 Motherboard H110M-C/CSM
Storage-Seagate - Barracuda 250GB 3.5" 7200RPM Internal Hard Drive
Video Card-MSI - GeForce GTX 1050 2GB GAMING X 2G Video Card
Case-Corsair - SPEC-01 RED ATX Mid Tower Case
Power Supply- Logisys - 480W ATX Power Supply
CPU Cooler-Cooler Master - Hyper T2 54.8 CFM Sleeve Bearing CPU Cooler

 

[okcnaline]

You're lucky the PSU turned your computer off. It most likely shut down because of protection. Get yourself a good PSU before turning on the computer again.

 

[Johny_Gee]

You're lucky the PSU turned your computer off. It most likely shut down because of protection. Get yourself a good PSU before turning on the computer again.

Hey okcnaline, thank you for your response, but how do I know that the PSU is the problem 100%? Could it be possible that one of thecpu, ram, or mobo components are bad?

 

[okcnaline]

The CPU rarely has a problem, but your local store can test it. You can find your local store to test the RAM. The motherboard is probably, but given it restarts ever 2 seconds instead of a POST code, the motherboard is the least probable problem.

 

[DSzymborski]

You're lucky the PSU turned your computer off. It most likely shut down because of protection. Get yourself a good PSU before turning on the computer again.

Hey okcnaline, thank you for your response, but how do I know that the PSU is the problem 100%? Could it be possible that one of thecpu, ram, or mobo components are bad?

The problem is that you'll *never* know 100% what the problem is without doing anything. It's like telling your doctor "my back hurts, but you have to tell me what it is before you do anything that costs money."

The PSU is the place to *start* considering it's so bottom-of-the-barrel. The paper clip test doesn't tell that much, really, and you weren't using any discrete GPU before. But there's no guarantee that spending to replace the PSU will fix the problem, you could simply have a garbage PSU *and* a different problem.

This is one of the many reasons not to buy parts like this in the first place, because as soon as something goes wrong, it becomes very hard to eliminate it as the source of the problem without replacing it first.

The next thing to do is go back to basics and breadboard the PC outside the case with the bare minimums and cross your fingers. But after that, the next place I would turn is the PSU.