Question No beeps, no POST after changing the CPU ?

[start_chaos]

I upgraded my CPU from an AMD Ryzen 3 3200G to a AMD Ryzen 5 5500, I had updated the BIOS some time ago, but not sure if it was new enough for the next CPU.

Once I had swapped out the processor however, nothing worked, no beeps from the pc telling me to fix something (even when no ram was inserted), the fans spun and the motherboards debug led was at a consistent white.

Even when going back to the old CPU, the same behaviour occured.

I also went through the no beep troubleshooting guide to no avail.

Specs:
MSI B450M Pro M2 Max
Cooler Master 400W
NVIDIA 1650 Super

 

[kerberos_20]

bios date for 5500 was released in april 2022

you might want to clear cmos

 

[Darkbreeze]

Do you have a system speaker like this connected to the motherboard, because if you do not, you are NEVER going to hear any beeps and they usually don't come with the board or the case anymore, and haven't for a number of years. You have to buy one if your board does not have troubleshooting debug LEDs or a Q-code display. If you've had this board for a while and haven't updated to a newer BIOS version, you need to do that. I'd put the old CPU back in and make sure you have the latest BIOS version installed.

 

[start_chaos]

I'll try the combination of old CPU and hard resetting CMOS. And yes, I have a speaker like that installed on my motherboard.

 

[Darkbreeze]

Hard reset won't do any good IF you don't have a new enough BIOS version. What is the currently installed BIOS version?

Where did you buy the CPU?

 

[start_chaos]

I'm not sure what the BIOS version is, but I'm guessing its older than April 2022.

I bought the new Ryzen 5 5500 from the most reputable pc parts store in my country, I've shopped with them for around 3 years and have had no problems until now.

I reset the CMOS and swapped in the old CPU, still nothing. I'm really puzzled, EVERYTHING is the same as before, and yet its still not POSTing ?

 

[kerberos_20]

I'm not sure what the BIOS version is, but I'm guessing its older than April 2022.

I bought the new CPU (5 5500) from the most reputable pc parts store in my country, I've shopped with them for around 3 years and have had no problems until now.

I reset the CMOS and swapped in the old CPU, still nothing. I'm really puzzled, EVERYTHING is the same as before, and yet its still not posting...

after cmos reset, first boot might take more time then at usualy try to give it few minutes

 

[start_chaos]

after cmos reset, first boot might take more time then at usualy try to give it few minutes

Gave it 20 minutes, still nothing.

 

[pctech2005]

have you checked to make sure none of the pins are bent?

 

[start_chaos]

The PC turned on when I woke up in the morning, but now its not posting again. Weird.

 

[start_chaos]

Booted into windows, everything worked and then the computer shut off under load and now the motherboard is flashing the debug led once and powering down.

 

[Darkbreeze]

What is the model of your Cooler Master 400w power supply and how long has it been in service?

 

[start_chaos]

Swapped out the psu to a new one and just saw a cap on the motherboard burn, needless to say im [bad language removed]

 

[start_chaos]

Nevermind, wasn't a cap.

 

[kerberos_20]

thats voltage regulator...

 

[Darkbreeze]

You have something shorted out somewhere.

 

[pctech2005]

What is important here is to figure what caused the voltage regulator's failure. Was there an out-of-place stand-off? Or was the power supply faulty?

 

[Darkbreeze]

Unless we don't know the whole story, it's the same motherboard that was working fine with the 3200G.

What is the model of PSU that you put in place of the old one and was it ACTUALLY new, or just a different one than what was in there before?