Question PC won't POST with new components ?

[PhantomTech77]

I installed a new Ryzen 5600 in my system a few months ago and it would not POST. This was because I didn't update the BIOS to support the 5000 series Ryzen CPUs, and since my old motherboard didn't have a BIOS flash function, I couldn't update it no-POST.
I then bought a new B550 board with Ryzen 5000 support, but the debug LEDs on the board indicated a CPU error. So I assumed the CPU was the issue and replaced it with AMD RMA.
I installed the new CPU in the new motherboard with working RAM and PSU. It will not POST, but instead of shutting off after 10 seconds it just runs with the CPU debug LED on.

 

[Darkbreeze]

I seriously doubt you "broke" the B550m Steel legend unless you installed the CPU wrong in which case you would likely have bent some pins on the CPU.

There is something else going on here I'm pretty sure. Either something isn't plugged in right, isn't plugged into the right place, you have something shorted out because of a motherboard standoff that is in the wrong place under the board or simply got a bad CPU from the start. SOMETHING is going on that isn't a "normal" problem.

So, that MSI B550m-VC WiFi DOES have BIOS flashback. You don't need to even have a CPU installed, or memory, or a graphics card, to update the BIOS to the latest version. Have you updated to the latest BIOS version on this board already or you did not do that at all yet? If not, I would update the BIOS to the latest version and then try again.

 

[PhantomTech77]

It might not have been the B450 board, it could have been a failure of the CPU or RAM in that system.
I updated the BIOS using the flash feature on the B550 board and still the same result. I kept the CPU and RAM in for the flash though, that might have caused a problem.

 

[Darkbreeze]

Maybe, but it should have still worked so long as the system wasn't powered on at the time. Plugged in, and PSU switch on the back of the PSU in the on "I" position, but not powered on at all.

Really doubtful that the problem would be two different CPUs, three different motherboards, etc.

At this point I might be looking at the power supply or the graphics card. Both of which you stated you got used and neither of which, as far as I'm concerned, has ever been shown to actually work since you've had problems with every hardware combination you've tried and all of them include these two parts.

 

[PhantomTech77]

Except both of them worked in my previous system. And unless u broke them in the transition to new parts they should still work.

 

[Darkbreeze]

Ok. Well, then I guess I don't know.

Something is definitely going on. Three boards that don't work? Two CPUs that don't work? It's just not realistic unless you're buying used parts out of somebody's trunk or off Ebay.

 

[PhantomTech77]

Ok. Well, then I guess I don't know.

Something is definitely going on. Three boards that don't work? Two CPUs that don't work? It's just not realistic unless you're buying used parts out of somebody's trunk or off Ebay.

2 motherboards 3 CPUs*
I bought both motherboards new and the first 5600 and 2400g were used.

Should I just sell or return what I have and start over?

 

[Darkbreeze]

Well, unless I'm in the wrong thread I've seen a B450 and two B550 boards in this thread, so that seems like three to me. I'll be honest, in all the years I've been building systems and all the years I've been working this forum I have never seen anybody go through three boards and three CPUs and not be able to get a functional system out of it unless something ELSE was faulty in the equation. That could be other hardware or user error. And I have no idea which because I am not there to verify anything and can only go off the information you are sharing with me which admittedly feels like there is something missing that would help define the problem.

It might be that starting over with all fresh components is what you need to do, but it certainly isn't what I would prefer to see you have to do.

 

[PhantomTech77]

Ok, thank for all of your help.