Question PC fails to boot, takes up to 6 times to actually boot.

[Dave1710]

PC fails to boot, takes up to 6 times to actually boot.
Let me describe detailed. I come home and want to open the pc. I press the power button on the case. the keyboard and mouse both lights up. the monitor also says "ASROCK" (mobo's boot up screen). The monitor, keyboard and mouse stop working ( keyboard and mouse aren't lit, and screen goes black). The fans start to go insane. They start going louder and then quieter and it repeats really fast. I tested the psu with a paperclip with one end on ground and one end on start. I tested the psu with a multimeter. All the pins show the right voltage. Also good to know this happens only when the pc is cold (cold starts). This makes me believe it's the motherboard.
I tried cleaning the rams pins, the gpu pins. I cleared the cmos battery. I changed the thermal paste on the cpu. I reinstalled windows. I reseted bios to it's default settings. I tried different settings in bios. I turned off/on xmp. I updated the bios. I probably tried more things but i can't remember. I also monitored the components temperatures. The cpu dosen't go over 62 celcius and gpu doesn't go over 82 (it's an amd gpu so it's okay).

PC SPECS:
CPU Ryzen 7 2700 not OC
GPU Radeon Rx5700 non xt
RAM 2*8gb HyperX Predator RGB 8GB DDR4 2933MHz CL15
MOTHERBOARD Asrock b450 steel legend
PSU Seasonic S12II-620 Bronze 620W
Hard disk Toshiba P300 1TB SATA-III 7200
SSD Kingston 512gb SATA-III.

 

[RodroX]

I got a Gigabyte B450 Gaming X (for years now), really budget board, and cross fingers, I haven't had any issues so far.

 

[Dave1710]

it was not the motherboard

 

[RodroX]

it was not the motherboard

What was the it then ?,Do you still have the issue?

 

[Dave1710]

What was the it then ?,Do you still have the issue?

not fixed yet, unfortunately🙁

 

[Dave1710]

the new motherboard has some lights that indicates possible problems. the yellow(dram) light is blinking when the pc enters the state i described. the same friend that gave me the psu also gave me his ram stick (which are compatible) to test if it works. it still didnt't work. i have now two motherboards, -120$ and a broken pc.

 

[RodroX]

On one of my previous post I wrote that it could be the CPU, if you can borrow one to test, then that will be your next step.

 

[Dave1710]

On one of my previous post I wrote that it could be the CPU, if you can borrow one to test, then that will be your next step.

the only things left are the cpu and the gpu, everything else tested. if it was the gpu, the monitor wouldn't show a thing. so that means it's .. the cpu i guess. i am going to see if i still have warranty. idk anymore. i am going to fix it and sell it, im done.

 

[Dave1710]

i disconnected the hdd and the pc booted everytime after, but i can't be sure untill tomorrow. Could a bad HDD cause all of this?