The latest MSI BIOS might cause issues with your motherboard.
The latest MSI BIOS might cause issues with your motherboard.
I have upgraded the MSI B450M Pro VDH Max BIOS to the newest stable release "E7A38AMS BH0". Post-update the system failed to restart and remained inactive with all fans operational. Upon reboot, the motherboard display shows an error LED at the CPU location, but there is no audible beep. The BIOS access is unavailable and no image appears from the GPU. I have already connected the CMOS pins, yet the issue persists. The CPU appears functional, having previously worked with both a 5600 and an older 2600. Unfortunately, the motherboard lacks Flashback support. How can this be resolved?
The update completed without issues. However, after the update it was expected to restart, but it didn’t (I waited roughly 10 minutes).
Is there a dual BIOS option on the board? You could also press the reset button on the MB power off, remove the CMOS battery, wait five minutes, then reinsert it and try booting—this should reset the motherboard to defaults. Make sure your BIOS update file is correct and that you have the right revision for both the board and the motherboard. Many boards support multiple revisions.
No dual BIOS CMOS reset succeeded—I believe the correct version exists. The latest release isn't a beta (vBH). Refer to the support page for details.
The error message points to the CPU. I’d still follow standard troubleshooting steps. Unplug everything except the monitor, keyboard, mouse, and the drive with the operating system installed. Disconnect all cables, USB devices, and the drive except for the one with OS. Only reinsert one RAM module during this process. To fix the CPU error, I’d also reinsert the CPU and try a different model. Experiment with older 2600 chips and switch them with 5600s. If you know someone using a 3000-series, consider that too. If the device is non-functional without flashback support, you have two choices: either contact the manufacturer for assistance (which could take a long time, as they may need to ship it) or purchase an external flash kit yourself. Watch tutorials on how it operates. Generally, you’d need a functional computer to run the tool. The external device would connect via USB to the working PC, and you’d use a test clip to interface with the BIOS chip on the motherboard. The tool is inexpensive, but compatibility might vary based on your motherboard and flashing equipment. The last option is visiting a repair shop that offers this service.
you have two cpus: a 2600 and a 5600, both installed with the latest bios. neither is functioning after the update. standard troubleshooting isn't effective since the motherboard speaker is silent, suggesting a possible issue with the cpu, motherboard, or power supply. the rams are still present and removing one didn't resolve the problem. it seems a local repair shop might be the best course of action.
Your bios seems to have issues if it's running on the CPU, which might mean it's stuck at a default postcode and not posting. To fix this, you can use an affordable ch341a programmer with a DuPont male-to-female and female-to-female jumper. Find the SPI header pinout on your board near the large JSPI1 logo. Use only six of these and match the ch341a pins to the SPI header. If you can't read the chip, add the remaining signals from the clamp area using male-to-female jumpers. If that fails, you may need to desolder the chip and reattach it on the ch341a.