A failed BIOS flash can permanently "brick" your motherboard, rendering the computer useless. Follow these rules strictly:

The is a micro-ATX motherboard manufactured by Dell, primarily found in the Optiplex 3010 and some Optiplex 7010 desktop models. The "100971" is a common silkscreen number on the PCB (Printed Circuit Board) used for factory identification.

: If your current BIOS version is more than two versions behind the latest one, Dell recommends updating gradually. Do not skip directly to the newest version; install each sequential update one at a time, restarting your computer after each.

The is a critical system firmware upgrade required to maintain the stability, performance, and security of widely deployed legacy Dell desktop systems. This microATX motherboard, heavily utilized in enterprise and casual computing builds like the Dell OptiPlex 3010, OptiPlex 390, Inspiron 620, and Vostro 260, relies on its BIOS firmware to correctly interface its Intel H61 Express chipset with key hardware components.

Once the progress bar reaches 100%, the computer will automatically reboot.

6.2 Supply-chain and tampering mitigations

Downloading a BIOS update from anywhere other than the manufacturer was like playing Russian roulette with a soldering gun. If the file was corrupted, or if it was the wrong variant for the MIH61R revision, the motherboard wouldn't just crash—it would become a permanent paperweight.

: Place the BIOS update file (usually a .exe or a specially formatted file for UEFI updates) on the USB drive.

After a successful BIOS update to version A22, disable "Secure Boot" and enable "Legacy Option ROMs" if you are using older graphics cards or operating systems like Windows 7.

and save it to a FAT32 formatted USB drive.

, this board was built on the Intel H61 chipset, supporting 2nd-generation (Sandy Bridge) and some 3rd-generation (Ivy Bridge) Intel Core processors. Motherboard Profile: The Workhorse H61

Alternatively, in Windows, press Win + R , type msinfo32 , and press Enter. Preparing for the BIOS Update (Crucial Steps)