troubleshoot Boot Loop yay

[Tasker Harris]

Built PC for friend-
 

• B450 ASRock Legend
• Ryzen 3500x
• RX 580 4GB
• 16GBs 3200Mhz DDR4
• 600 or 650 watt? Seasonic PSU

Put it all together no problems, installed Windows and it booted correct and everything. Give it to him and then starts the onslaught of problems.
Day after putting it together and he takes it home - Everything boots but no signal to any monitor he tries, cable, etc.
Day after this - RGB stops working on case fans
When it arrives back to me - only 1 front fan turns on, second one and the back exhaust fan don't turn on, as well as CPU cooler fan.

Immediately my mind runs to the CPU. Sure enough I replaced it with my spare AM4 CPU (I think its some sort of athlon) and fixes almost all the issues.

However- now my problem is a boot loop that I cannot solve for the life of me.
I have been narrowing it down and I think it is either the motherboard or psu- I just want to hear others thoughts on this. I have been knocking off more and more parts until it has now come to only the cpu, the cooler, the motherboard, case and PSU. I have removed RAM, storage, and GPU. It turns on for about 15 seconds or so, turns off, then rinse and repeat. Help is greatly appreciated!
 

 

[WhitetailAni]

Update your BIOS.

[Tasker Harris]

Just now, ragnarok0273 said:

Update your BIOS.

How do I do this? I have actually never had to flash a BIOS before, most stuff has worked out of the box. Do you think this could also potentially fix the 3500x or do you think its a bad CPU as well?

[WhitetailAni]

Just now, Tasker Harris said:

How do I do this? I have actually never had to flash a BIOS before, most stuff has worked out of the box. Do you think this could also potentially fix the 3500x or do you think its a bad CPU as well?

B450 was the Zen+, or Ryzen 2000 chipset. Most B450 boards do support Zen 2 natively, but BIOS updates can help.

Look up a guide on ASRock's website.

[Tasker Harris]

3 minutes ago, ragnarok0273 said:

B450 was the Zen+, or Ryzen 2000 chipset. Most B450 boards do support Zen 2 natively, but BIOS updates can help.

Look up a guide on ASRock's website.

The website lists a lot of different downloads. Should I do the latest one such as 6.1 or do one that applies to the CPU such as version 2.1 or whatever?

[WhitetailAni]

4 minutes ago, Tasker Harris said:

The website lists a lot of different downloads. Should I do the latest one such as 6.1 or do one that applies to the CPU such as version 2.1 or whatever?

The newest one for your motherboard.

[Tasker Harris]

6 minutes ago, ragnarok0273 said:

The newest one for your motherboard.

 

17 minutes ago, seee the state im in nooow said:

protip: state your reasoning whenever you're giving advice. your comment could benefit from things like:

 

• update your bios, the CPU is of a newer generation to the motherboard
• update your bios, there has been a new update that addresses this issue

not saying these two may be the actual reasoning, but it's general practise that you don't update BIOS as the first resort (unless it is considered very carefully) because (depending on the motherboard ) it's a process that could be fail-safe or fail-deadly if the process is interrupted mid-flash

So ASRock says to flash it, I have to enter BIOS/ press the F2 key on startup. I cannot do this because it does not show signal/ enters the boot loop. So now what?

 

[WhitetailAni]

Just now, Tasker Harris said:

 

So ASRock says to flash it, I have to enter BIOS/ press the F2 key on startup. I cannot do this because it does not show signal/ enters the boot loop. So now what?

 

Put in your other AM4 CPU, since it worked with that one.

[Tasker Harris]

6 minutes ago, ragnarok0273 said:

Put in your other AM4 CPU, since it worked with that one.

No you're not getting what I am saying. The 3500x= nothing working. The athlon fixes a lot of the problems, but I still get no display from the GPU.

[IkeaGnome]

2 minutes ago, Tasker Harris said:

No you're not getting what I am saying. The 3500x= nothing working. The athlon fixes a lot of the problems, but I still get no display from the GPU.

If it booted just fine for you, then got transported and now is having weird issues, I'd start with checking connectors. 24 pin, 8 pin on top left, remove and reinstall GPU and PCIE power to it. Unseat and reseat RAM. Clear CMOS and try again.

[Tasker Harris]

22 minutes ago, Voluspa said:

If it booted just fine for you, then got transported and now is having weird issues, I'd start with checking connectors. 24 pin, 8 pin on top left, remove and reinstall GPU and PCIE power to it. Unseat and reseat RAM. Clear CMOS and try again.

Already unplugged and replugged all connections, including GPU and RAM stuff. Going to remove the battery and let you know my results

[IkeaGnome]

Just now, Tasker Harris said:

Already unplugged and replugged all connections, including GPU and RAM stuff. Going to remove the battery and let you know my results

If that doesn't fix it, I'd start asking what drivers he started downloading. He might have grabbed a bad driver from somewhere on accident. (wrong chipset or something similar). 

[Tasker Harris]

5 minutes ago, Voluspa said:

If that doesn't fix it, I'd start asking what drivers he started downloading. He might have grabbed a bad driver from somewhere on accident. (wrong chipset or something similar). 

Did not fix it. And he didn't download anything, he got home and plugged it up and it was not displaying.

[IkeaGnome]

15 minutes ago, Tasker Harris said:

Did not fix it. And he didn't download anything, he got home and plugged it up and it was not displaying.

At this point, I'd completely disassemble and reassemble. Easy way to make sure everything is how it should be. If anything, try CPU, Mobo, RAM, cooler and GPU on motherboard box to eliminate anything getting jostled when it got moved. If it still acts weird, I'd try a fresh install of windows. All the symptoms look like something got loose if it worked fine for you then not for him without him installing anything or playing in BIOS(but CMOS should have cleared BIOS settings). Connections on PSU side maybe.