Question EZ Debug solid white CPU light stuck on AFTER bios flash.

[Azul_Indigo]

Relevant equipment:

CPU: Ryzen 7 5700x
CPU cooler: Thermaltake Phantom Spirit 120 SE
Motherboard: MSI PRO B550 VC-WIFI
Ram: Corsair Vengeance LPX 32GB (2x16) 3200MHz CL16
SSD/HDD: Silicon Power 1TB SSD, WD Caviar Blue 1TB HDD
GPU: Nvidia GTX 1060 3GB (Re-Used from bottlenecked system)
PSU: Segotep 750w 80+ Certified Gold Fully Modular
Chassis: Fractal Pop Mini Air mATX
OS: Linux Mint Cinnamon
Monitor: Acer Desktop connected via HDMI

The Issue:

Hello, this weekend, I was putting together my first PC build. I knew the CPU I wanted for my motherboard needed a bios update to be compatible. After apparently successfully flashing the latest non-beta bios for my motherboard offered by MSI (7C95vHC), I put my computer together. I turned it on to find the white CPU light solid on the EZ Debug part of my motherboard, and there was no signal on my monitor.

I did some research and tried quickly flicking the power switch, removing 1 of my RAM sticks, and dissassembling everything attached to the motherboard to reach the CMOS battery while shorting the JBT1 pins with a screwdriver for 5 seconds after waiting 20 minutes. After that, I attempted to flash an older BIOS version explicitly released for "Support new Ryzen 5000 CPU." (7C95vHA). When I put a fresh Fat32 4 GB USB drive with the bios file labeled "MSI.ROM" in the designated USB 2.0 slot, the light turns on for both the USB and the motherboard, flickers 10 times, the USB light goes off, and the motherboard red BIOS light stays ON indefinitely. I have to remove the USB short JBT1 again to turn it off after disconnecting the PSU cable and switching it off.

How bad is it? This is my first time building, and it has become a nightmare. Am I missing something simple?

Edit: I've also tried loosening the screws around the motherboard and looking for possible shorts.

Pictures:

https://imgur.com/a/44bIQN1

View: https://imgur.com/a/44bIQN1

 

[Lutfij]

Welcome to the forums, newcomer!

Since you were flashing the BIOS to your motherboard, I'd have gone with the latest(yes the Beta version) BIOS version, cleared the CMOS and then seen if things progressed.

Ideally you clear the CMOS like so:
Disconnect from the wall and display, then remove the CMOS battery, press and hold down the power button for 30secs to drain any residual power, then replace the battery after 30mins.

I'm seeing a pattern as there have been to my memory about 3~5 threads I've answered this year that exhibited a similar issue. Users with lower end boards that ended up dropping a Ryzen 5 5700x to later end up with either a CPU or RAM debug LED, which could mean that your CPU was dead on arrival or the memory controller is at fault or both.

Can you drop your processor onto a known working motherboard(with the right socket and BIOS version) to rule out your processor being dead on arrival? This would also hep indicate that the board might be at fault if the processor works.

 

[Azul_Indigo]

Thank you!

I understand. I can try the beta version, but I worry the same thing will happen where the USB light turns off, and the bios flashback light stays on again. Prior to the CMOS clearing attempt, I removed all connections inside and outside the case.

I do not currently have an alternative motherboard or processor to test or flash with, so I am writing from an old laptop.