Asus Prime B550M-A No POST

[pookeyhead]

Just bought the parts for my daughter's new PC, and I can't get it to POST. Just put it together on the bench to test, but no go I'm afraid.

Asus Prime B550M-A
16GB Corsair Vengeance RGB Pro (CMW16GX4M2D3600C18)
Ryzen 5600G
Samsung 256GB 980 Pro M.2 NVME
Corsair CX750F RGB PSU

The CPU fan spins up... RAM RGB lights up, but gives 6 bleeps and there's no video output. I've no idea if they are long, or short bleeps, as I've nothing to compare them to (all being same length) but they sound long.

Tried so far:

• Cleared CMOS
• Removed battery and cleared it again
• removed one RAM module and tried in all slots.
• As above with the other module
• Added a GPU
• Tried both HDMI and VGA, on both m/b and gpu (an old, but working GT720 - tested OK on another rig)
• Tried M.2 in both slots
• tried without any SSD
• tried with and without k/board and mouse
• tried without any RAM

I do not have another Ryzen CPU, or any other DDR4 to test.

I can find nothing about POST error beeps in the manual, and nothing on the website mentions 6 beeps.

Anyone got any ideas?

Thanks in advance

[IkeaGnome]

Flash BIOS.

https://www.msi.com/Motherboard/support/B550M-A-PRO

 

[Skiiwee29]

To support the 5600g you will need to flash your BIOS. Unfortunately, this board does not have a BIOS flashback button. This means you will require a 3000 or normal 5000 series CPU and a GPU to be able to Flash the BIOS to gain support for the new APUs. 

[pookeyhead]

12 minutes ago, Skiiwee29 said:

To support the 5600g you will need to flash your BIOS.

According to the Asus website, I don't. All board revisions support the 5600G

[Skiiwee29]

Just now, pookeyhead said:

According to the Asus website, I don't. All board revisions support the 5600G

PCB revisions, yes.. not BIOS. The board needs to be on BIOS 1401 or newer. 

[pookeyhead]

Ahh yes... you may be right.  Can I flash the BIOS without a video output on the PRIME?  I'll read the manual later of course, but maybe you know?

[IkeaGnome]

30 minutes ago, Skiiwee29 said:

To support the 5600g you will need to flash your BIOS. Unfortunately, this board does not have a BIOS flashback button. This means you will require a 3000 or normal 5000 series CPU and a GPU to be able to Flash the BIOS to gain support for the new APUs. 

I completely missed that there isn't any sort of Bios Flashback on that board.

 

12 minutes ago, pookeyhead said:

Ahh yes... you may be right.  Can I flash the BIOS without a video output on the PRIME?  I'll read the manual later of course, but maybe you know?

Not on that board, no. Your best bet is probably to see if a computer repair store near you can do it. AMD has a CPU loaner program, but then you're waiting on mail. 

[pookeyhead]

OK...  Thanks anyway. I'll see if there's any indication of BIOS version on the packaging etc.

[Skiiwee29]

Just now, pookeyhead said:

OK...  Thanks anyway. I'll see if there's any indication of BIOS version on the packaging etc.

Sometimes there will be a sticker on the board that will indicate the BIOS revision, but I don't know if Asus does that or not. 

[pookeyhead]

Yeah I'll check after dinner. (I'm in the UK) because my family are all saying they are hungry and it's my turn to cook LOL.

Thanks again.

[The che]

 

 

@pookeyhead 

 

i have literally the same issue with an almost identical setup:(

 

dis the same steps aswell. 
 

do your USB peripheral come on?

[pookeyhead]

5 hours ago, The che said:

 

 

@pookeyhead 

 

i have literally the same issue with an almost identical setup:(

 

dis the same steps aswell. 
 

do your USB peripheral come on?

No, as a matter of fact they don't.  Keyboard doesn't work, and while the mouse sensor is active, it's RGB doesn't work.  Other than that I'd have no idea, because I have no video output.

[pookeyhead]

9 hours ago, IkeaGnome said:

AMD has a CPU loaner program

I just checked: You need a a B450 motherboard to qualify for that.

[pookeyhead]

I managed to get a local PC shop top loan me a 3100 to boot with, and the board is fine. Reflashed, and all is well.  Why a "new" board had such an old BIOS I've no idea, but all is good now.  Thanks.

[TooOld2Remember]

Hi, just saw this.  I am struggling to boot it off an NVMe SSD.

Building a system for underprivileged students here in Silicon Valley. I have an

NVMe B550M-A with WiFi (discarded by a gamer)

Crucial 2TB P2 NVMe PCIe M.2 Internal SSD (mfg part CT2000P2SSD8)

The BIOS is updated: I went to a computer store and they upgraded for $40.  

 

I see that you have a clean boot off an NVMe. I couldn't get it to recognize the SSD as a bootable drive.  I got frustrated so I booted off a SATA SSD and am using the NVMe as an extra drive.  

Is there a way you can share the settings?