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PartyDjango · ‎03-24-2025

Hey, i was trying to update my bios, from a later version to a newer one. Except I had a problem, my aio cooler wasnt spinning/working. When i was on 50% of the new BIOS update, my pc just shuts off. And since that problem, im only getting the 15 error code at first, and the c5 code right after. And my pc wont boot anymore. Did I brick my motherboard? How do i fix it? Pls help

Pc specs

Crosshair x870e hero

G.skill 64gb 6800mhz RAM

Ryzen 7 9800x3d

Silent_Scone · ‎03-24-2025

Hi @PartyDjango

Use USB Flashback to reflash the latest BIOS and reattempt. Please note that memory training may take 5 to 10 minutes initially (Code 15).

9800X3D / 6400 CAS 28 / ROG X870 Crosshair / TUF RTX 4090

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PartyDjango · ‎03-24-2025

Hi @Silent_Scone ,

I used the flashback. But when I boot, it stays on the code 15 as usual, but after a few min it shuts off automatically. Have any ideas?

View solution in original post

PartyDjango · ‎03-24-2025

Silent_Scone · ‎03-24-2025

Hi @PartyDjango

Use USB Flashback to reflash the latest BIOS and reattempt. Please note that memory training may take 5 to 10 minutes initially (Code 15).

9800X3D / 6400 CAS 28 / ROG X870 Crosshair / TUF RTX 4090

PartyDjango · ‎03-24-2025

Hi @Silent_Scone ,

I used the flashback. But when I boot, it stays on the code 15 as usual, but after a few min it shuts off automatically. Have any ideas?

LilyCarter · 3 weeks ago

Try clearing CMOS and re-flashing BIOS; may resolve the issue.

BIOS update was interrupted, possibly causing a bricked motherboard. The 15 and C5 error codes often indicate hardware initialization or memory issues. Try resetting the CMOS by removing the battery or using the jumper, and see if your motherboard supports BIOS recovery via a USB drive. If that doesn’t work, you might need to reflash the BIOS with a USB stick. Writing a case study was a challenge for me, but with Academized’s write my case study service, everything went smoothly. They delivered a comprehensive analysis with detailed solutions. If you need help with a case study, visit https://academized.com/write-my-case-study. Their team of writers will make sure your case study is both well-written and properly structured.

Code 15/C5 boot