UEFI/BIOS
The MSI Pro B850M-A WiFi PZ is equipped with a standard AMI BIOS. MSI refers to their BIOS as “Click X BIOS”. Navigation and selection do indeed function smoothly with a single click inside the BIOS menus. We do have to admit, the color scheme of the BIOS background is a bit fatiguing to the eyes after a while. We could not find a menu that allowed a color change.
As you boot up for the first time, you encounter the “MSI Performance Preset”, a one-time ask if you wish to enable AMD PBO. Otherwise, you will be greeted by either the EZ Mode or the Advanced Mode screen. EZ Mode, as you can see above, is designed to give one a one-page selection menu of the most used BIOS items, hardware monitoring, information and tools. Unless you need motherboard options or overclocking, this is your main page.
For those who wish to tinker with their system, the Advanced mode offers the Advanced menu (motherboard options), Overclocking, Security and Boot menus. At the top are various tools and the Hardware (Smart Fan) section. The B850 motherboards offer quite a good number of CPU and memory overclocking options, as well as one-click PBO and EXPO. MSI also offers an intermediary memory overclocking “Memory-Try-it” which presents a menu of prebuilt overclocking selections to experiment with.
Our motherboard arrived with the release BIOS version E7E78AMSI.1A10 dated 10 Jul 25. Using M-Flash, we updated the BIOS to the most recent version E7E78AMSI.1A12 dated 24 SEP 25. M-Flash is quite straightforward. Selecting the flash drive icon at the top of the page opens the utility. All you need is a flash drive with the unzipped BIOS version. Highlight that and follow the prompts. MSI also offers Flash-BIOS from the rear I/O panel as well, which requires no CPU, only a PSU and a flash drive.
We found the Click X Bios to be very intuitive, responsive and well thought out.
