F5F Stay Refreshed Hardware Desktop PC fails to post with Ryzen 7 5800X3d

PC fails to post with Ryzen 7 5800X3d

PC fails to post with Ryzen 7 5800X3d

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F
Flundi
Member
231
04-14-2022, 12:56 PM
#1
Experiencing a nightmare
My old motherboard failed, so I had to replace it.
I received an MSI Mag Tomahawk B550.
My CPU is an AMD Ryzen 7 5800X3D, which meant the system wouldn't boot without it. I installed an older CPU, got the system running in Windows, and applied the latest BIOS on the motherboard.
Swapping the CPU still didn’t work, the GPU fans ran at maximum speed but no visual output appeared.
The motherboard claims support for the 5800X3D in one of the BIOS updates, but I ignored that update and simply upgraded to the newest version. Did this also remove the support feature, or should it have been included in the latest release?
I’m wondering if rolling back to a specific update would restore compatibility with the 5800X3D.
Also worth mentioning, there was an excessive amount of thermal paste applied—some remained in the socket but didn’t appear to impact the older CPU. However, my 5800X3D has some paste on its pins. I should carefully remove it using isopropyl alcohol before attempting another try.
F
Flundi
04-14-2022, 12:56 PM #1

Experiencing a nightmare
My old motherboard failed, so I had to replace it.
I received an MSI Mag Tomahawk B550.
My CPU is an AMD Ryzen 7 5800X3D, which meant the system wouldn't boot without it. I installed an older CPU, got the system running in Windows, and applied the latest BIOS on the motherboard.
Swapping the CPU still didn’t work, the GPU fans ran at maximum speed but no visual output appeared.
The motherboard claims support for the 5800X3D in one of the BIOS updates, but I ignored that update and simply upgraded to the newest version. Did this also remove the support feature, or should it have been included in the latest release?
I’m wondering if rolling back to a specific update would restore compatibility with the 5800X3D.
Also worth mentioning, there was an excessive amount of thermal paste applied—some remained in the socket but didn’t appear to impact the older CPU. However, my 5800X3D has some paste on its pins. I should carefully remove it using isopropyl alcohol before attempting another try.

1
1234qaz12qaz
Posting Freak
773
04-14-2022, 07:45 PM
#2
Following the cleaning of the pins on the 5800x3d reset bios defaults (clear CMOS) via the jumper instructions on page 25 of the manual, the latest BIOS version now includes enhanced support for the CPU. There is no longer a requirement to revert to an older version.
1
1234qaz12qaz
04-14-2022, 07:45 PM #2

Following the cleaning of the pins on the 5800x3d reset bios defaults (clear CMOS) via the jumper instructions on page 25 of the manual, the latest BIOS version now includes enhanced support for the CPU. There is no longer a requirement to revert to an older version.

M
mark_mister
Junior Member
38
04-14-2022, 08:00 PM
#3
Don't have a jumper cap, but it's running the 2700 now. Can I simply load default settings from the BIOS screen before swapping the CPU back? Or should I remove the battery to reset the CMOS?
M
mark_mister
04-14-2022, 08:00 PM #3

Don't have a jumper cap, but it's running the 2700 now. Can I simply load default settings from the BIOS screen before swapping the CPU back? Or should I remove the battery to reset the CMOS?

S
sasmc4
Junior Member
10
04-14-2022, 09:08 PM
#4
It doesn't have to be a jumper cap; using a screwdriver is effective since you simply need to short the two pins.
S
sasmc4
04-14-2022, 09:08 PM #4

It doesn't have to be a jumper cap; using a screwdriver is effective since you simply need to short the two pins.

_
_PowCat_
Junior Member
4
04-14-2022, 09:42 PM
#5
Done that, the CPU is clean, the pins look fine, but the reset CMOS PC still won't post. Anyone have suggestions?
_
_PowCat_
04-14-2022, 09:42 PM #5

Done that, the CPU is clean, the pins look fine, but the reset CMOS PC still won't post. Anyone have suggestions?

A
Aruan_Vargas
Member
233
04-23-2022, 02:41 PM
#6
It's possible the 5800x3d failed along with the previous board.
A
Aruan_Vargas
04-23-2022, 02:41 PM #6

It's possible the 5800x3d failed along with the previous board.

O
okA_
Member
141
04-24-2022, 04:40 PM
#7
think you could be correct, I've tried everything else
O
okA_
04-24-2022, 04:40 PM #7

think you could be correct, I've tried everything else

Z
ZainyZac
Junior Member
48
04-24-2022, 06:03 PM
#8
Purchased another CPU today 9 5900X but encountered the same problem again.
Z
ZainyZac
04-24-2022, 06:03 PM #8

Purchased another CPU today 9 5900X but encountered the same problem again.

B
banshee45
Senior Member
726
04-25-2022, 12:29 AM
#9
I had to bring it to a nearby repair shop to check since I was running out of options. They suggested the RAM might be related, as some newer AMD CPUs can fail to boot with older DDR4 memory. Anyone knows if this has happened before?
B
banshee45
04-25-2022, 12:29 AM #9

I had to bring it to a nearby repair shop to check since I was running out of options. They suggested the RAM might be related, as some newer AMD CPUs can fail to boot with older DDR4 memory. Anyone knows if this has happened before?

P
piff2222
Member
57
04-25-2022, 04:04 AM
#10
Considered it might relate to the Bios. I updated the BIOS with the 7 2700, but the revision date still matches incorrectly. I'm curious if flashing the BIOS via BIOS Flashback would help.
P
piff2222
04-25-2022, 04:04 AM #10

Considered it might relate to the Bios. I updated the BIOS with the 7 2700, but the revision date still matches incorrectly. I'm curious if flashing the BIOS via BIOS Flashback would help.

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