Device fails to power on after an upgrade attempt.

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FlameSquid32
Senior Member

501

09-13-2025, 08:51 PM

Hello, I'm having trouble figuring this out. I bought a larger CPU, the AMD Ryzen 9 9950X3D, to replace my previous one. My motherboard is an MSI B850 GAMING PLUS WIFI with the latest BIOS version 1.A90. The PC won't turn on after I reset the CPU three times and double-check the pins. When I put in my old CPU, it worked fine. It's even warm to the touch, which is strange. Should I upgrade to a different motherboard or is this CPU still functional? I'm considering switching to an X870E but want advice from others.

FlameSquid32

09-13-2025, 08:51 PM #1

Stitchboy11_11
Junior Member

09-13-2025, 09:49 PM

Another try with the BIOS after putting in the new CPU?

Stitchboy11_11

09-13-2025, 09:49 PM #2

Another try with the BIOS after putting in the new CPU?

DatDrop
Member

190

09-15-2025, 06:38 PM

The board needs to accommodate the 9950X3D, and you possess the newest BIOS. Would you like me to test the CPU on a different spare board, or should I send it to a friend for evaluation? Avoid purchasing a new board solely for testing the CPU.

DatDrop

09-15-2025, 06:38 PM #3

o0eGaD0o
Junior Member

09-19-2025, 03:33 AM

Yes, both EPS 12V power connectors are connected to the motherboard via the PSU.

o0eGaD0o

09-19-2025, 03:33 AM #4

Yes, both EPS 12V power connectors are connected to the motherboard via the PSU.

kenton12
Member

204

09-20-2025, 03:38 PM

Both units require plugging in and sitting securely with a 1200W PSU sufficient.

kenton12

09-20-2025, 03:38 PM #5

Both units require plugging in and sitting securely with a 1200W PSU sufficient.

a1k2
Member

09-20-2025, 09:25 PM

Unfortunately, I only have an AMD5 MB and my friends know they use Intel or older AMD.

a1k2

09-20-2025, 09:25 PM #6

Unfortunately, I only have an AMD5 MB and my friends know they use Intel or older AMD.

ToastyJedi
Junior Member

09-21-2025, 01:10 AM

That's interesting. I'd redo it like they recommended. Have you given it about ten minutes to confirm it's not just memory practice?

ToastyJedi

09-21-2025, 01:10 AM #7

That's interesting. I'd redo it like they recommended. Have you given it about ten minutes to confirm it's not just memory practice?

pixcake
Member

09-22-2025, 04:50 PM

This refers to the most recent update, likely added recently to ensure functionality.

pixcake

09-22-2025, 04:50 PM #8

This refers to the most recent update, likely added recently to ensure functionality.

esprimer
Junior Member

09-26-2025, 07:26 PM

Held for 30 minutes each time, three times it wasn't displaying any activity. No light or anything.

esprimer

09-26-2025, 07:26 PM #9

Held for 30 minutes each time, three times it wasn't displaying any activity. No light or anything.

spactictroll
Junior Member

09-29-2025, 12:38 PM

#10

Because you just purchased it, you're covered by the warranty. You can contact the reseller to have it checked and request a replacement or refund if needed.

spactictroll

09-29-2025, 12:38 PM #10

Because you just purchased it, you're covered by the warranty. You can contact the reseller to have it checked and request a replacement or refund if needed.

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