ryzen 5 wont boot

[Corporal_Canada]

ok, so i ordered a ryzen 5 (5000 series) and msi motherboard b450 . and after installation and boot. screen remained blank... small led on motherboard indicated problem w/ cpu... researched online to find that this motherboard has known issues. so i order another 1 (gigabyte b450m d3sh wifi)....  forgot to mention.. psu is corsair cx750m.....(750watts) this time after installation, nothing works... cpu fan( not even psu fan)wont spin up... now im confused.. pls help

 

and mouse does light up when psu is on so there is power

[Levent]

All AM4 motherboards require bios updates before they can use Zen3 CPUs.

[Corporal_Canada]

so the gigabyte 1 wont even power on ? and how can i update if nothing comes on ?

[Levent]

2 minutes ago, Corporal_Canada said:

so the gigabyte 1 wont even power on ? and how can i update if nothing comes on ?

You should have done your home work. You can either get a motherboard that is able to flash its bios through USB devices without a CPU present, or you should have gotten Zen2 (assuming you didnt get an ancient old stock board from 2018) CPU updated the BIOS then swapped the new CPU in.

 

There is also flashing the EEPROM directly which requires a programmer.

[Corporal_Canada]

15 minutes ago, Levent said:

You should have done your home work. You can either get a motherboard that is able to flash its bios through USB devices without a CPU present, or you should have gotten Zen2 (assuming you didnt get an ancient old stock board from 2018) CPU updated the BIOS then swapped the new CPU in.

 

There is also flashing the EEPROM directly which requires a programmer.

ryzen 5 5600G to clarify, i dont know if thats zen 3 or not. i understand nothing you said, ive never had to flash a bios my whole life

[aledsav1]

your board will require an older rzyen cpu that works on it for you to then flash a newer bios so that the board works with the 5000 series chips

[Levent]

1 minute ago, Corporal_Canada said:

ryzen 5 5600G to clarify, i dont know if thats zen 3 or not. i understand nothing you said, ive never had to flash a bios my whole life

Yes that is a Zen3 CPU and you still have to flash your BIOS before you can use either of those CPUs on any AM4 motherboard. No AM4 motherboard came with a BIOS that was compatible with Zen3 CPUs.

[Ottoman420]

When i ordered the b550 it came with a ryzen 5000 bios.

 

What can you do in this situation? Order a ryzen 2600 or anything ryzen cheap or borrow a friends older ryzen cpu.

Or by a new motherboard b550.

 

Im betting you can find an old ryzen cpu for around £30

 

 

[aledsav1]

you will need a 2600 or 3600 cpu for example to then flash the latest bios that supports a 5000 series processor, it is an easy mistake to make for those who are not aware of these possible problems,  there will have been 1000's of people who found themselves in similar situation.

[_Omega_]

with a b450 borad you can get lucky but you shouldnt rely on it... even with some b550 boards you need a bios update to get it running with for example a 5600(non-X) or 5800X3D... always buy a board with bios flash back, even some budget boards have it now.

 

And thats the reason that bios flash back is required by AMD for all AM5 mainboards

[Corporal_Canada]

omg, im going on vacation, i dont need the headache of buying another part, at least the msi motherboard everything spun up (cpu & psu fan) gigabyte motherboard nothing

[Poinkachu]

18 minutes ago, Ottoman420 said:

When i ordered the b550 it came with a ryzen 5000 bios.

 

What can you do in this situation? Order a ryzen 2600 or anything ryzen cheap or borrow a friends older ryzen cpu.

Or by a new motherboard b550.

 

Im betting you can find an old ryzen cpu for around £30

 

 

Or find nearest brick & mortar shop for PC parts, ask them if they have Zen you need and could they help you update your BIOS for a small fee.

[Corporal_Canada]

i live in a small town in Quebec theres no such thing as a small fee here... but thats a good idea

[Corporal_Canada]

so which motherboard should i bring to the ONLY pc shop in town, msi or gigabyte ?

[podkall]

1 hour ago, Levent said:

All AM4 motherboards require bios updates before they can use Zen3 CPUs.

are the manufacturers that lazy?

[Poinkachu]

13 minutes ago, Corporal_Canada said:

so which motherboard should i bring to the ONLY pc shop in town, msi or gigabyte ?

Which one you want to keep ?

 

5 minutes ago, podkall said:

are the manufacturers that lazy?

Eh well, the B550 motherboard was released before Zen 3 did.
Some old stock still circulates I guess.

B450... even older.

[aledsav1]

take them both

[podkall]

2 minutes ago, Poinkachu said:

Eh well, the B550 motherboard was released before Zen 3 did.
Some old stock still circulates I guess.

yes, but shouldn't the newly made motherboards have latest bios?

 

though I forgot if bios is compatible with older CPUs when it supports the newer ones on Ryzen..

[Poinkachu]

2 minutes ago, podkall said:

yes, but shouldn't the newly made motherboards have latest bios?

 

though I forgot if bios is compatible with older CPUs when it supports the newer ones on Ryzen..

Well, some new B550 maybe.

OP's motherboard is B450 so ... :x

 

I've no idea as well, don't have older Zen to try with.
Although IIRC i did saw some posts in some other places that some chipset lose older gen support after flashing for Zen 3, can't remember whether that was B450 or what.

[podkall]

1 minute ago, Poinkachu said:

Although IIRC i did saw some posts in some other places that some chipset lose older gen support after flashing for Zen 3, can't remember whether that was B450 or what.

I could see why though, it is a different architecture afterall

[Poinkachu]

Just now, podkall said:

I could see why though, it is a different architecture afterall

Or simply running out of space in the BIOS chip.

[podkall]

Just now, Poinkachu said:

Or simply running out of space in the BIOS chip.

makes sense, I don't have such depth knowlege to even know that the BIOS can run out of storage, but I guess perhaps on cheap boards...

[Corporal_Canada]

2 minutes ago, podkall said:

I could see why though, it is a different architecture afterall

i wanna keep the msi 1

[podkall]

Just now, Corporal_Canada said:

i wanna keep the msi 1

keep whichever one you like, what was the model of the MSI?

[Poinkachu]

6 minutes ago, podkall said:

makes sense, I don't have such depth knowlege to even know that the BIOS can run out of storage, but I guess perhaps on cheap boards...

https://www.anandtech.com/show/12971/amd-bios-limitations-bristol-ridge-dropped-from-certain-motherboards

 

 

Something to read when bored.

 

Basically it's due to how many CPUs AM4 have to support during their 5 years-no-socket-change promise