[SOLVED] PC turns on for 15 seconds then turns off and then loops ?

[47grapes]

Hello, I just built my first PC.

-Parts-

Case: Rosewill FBM-X2 Micro ATX
Motherboard: ASRock B450M PRO4 Micro-ATX AM4
Ram: OLOy 16 gb DDR4-3000 CL16
CPU: AMD Athlon 3000g 3.5 GHz
PSU: Gigabyte P-B650 W 80+
Storage: PNY CS900 240gb 2.5" SSD
CPU cooler: Stock cooler for AMD Athlon 3000g

I put all the parts together after a few hours of trying, watching tutorials, and making sure everything fit and plugged in. I was very excited when I pressed the power button, watched the fans turn on, and then keep spinning.

I thought I had managed to build it and didn't have any problems. Imagine how annoyed I was when my monitor said "NO SIGNAL" and then the PC turned off.

Then, it turned back on, the fans spun for 15 seconds and turned off again. It continued to do this until I turned off the power supply.

First I tried to diagnose where the problem was. I took out the ram and started the PC. Nope, still did the loop. So I tried unplugging the SSD, no luck. I spent the a while looking at forum posts and I am thinking that it may be a problem with my CPU. I have attached an image/video of my pc's interior and the problem below.

View: https://www.youtube.com/watch?v=aIfR_gRLsMs
(Video of the problem)
Images of the interior:

https://imgur.com/a/ViXZ6cI

View: https://imgur.com/gallery/ViXZ6cI

https://imgur.com/a/NIWJoYQ

View: https://imgur.com/gallery/NIWJoYQ

https://imgur.com/a/amvj0ST

View: https://imgur.com/gallery/amvj0ST

 

[rgd1101]

https://www.asrock.com/mb/AMD/B450M Pro4/index.asp#CPU
what bios version?

 

[47grapes]

https://www.asrock.com/mb/AMD/B450M Pro4/index.asp#CPU
what bios version?

I'm sorry but I am really not sure. On the page where I bought it it says that it is updated to support Ryzen 3000 series cpus, but I don't know how to check the exact version. It says on the link that the motherboard has supported the Athlon 3000g since bios version 3.60, do you think this may be the problem?

 

[rgd1101]

yeah, you can't boot if the motherboard is on a lower version.

 

[47grapes]

yeah, you can't boot if the motherboard is on a lower version.

Hm, Alright, I'll try to update the bios and I'll see if that works. That would make sense since the motherboard is old.

 

[47grapes]

yeah, you can't boot if the motherboard is on a lower version.

I just checked the bios chipset on the motherboard and it is currently set to bios version 4.3, which should work with my CPU (Athlon 3000g) according to the CPU support list, So I don't think that is the issue.