Warning. This could brick your computer. Proceed at your own risk. The Afud2385.exe can perform a flash in DOS mode. It would be best if attached to a UPS power supply if available because if there is a power interruption during the flash it has a high probability of bricking your computer.
Download Rufus. Attach your flash drive and run Rufus. Select MBR partition scheme in the dropdown box and leave all boxes as checked. Use Fat32 for a file system.
In the dropdown box that lists iso image select FreeDos. Press Start. Backup any data on the flash drive as it will be formatted.
Copy AFUD2385.exe and E7751IMS.1B0 to the root of the flash drive.
Boot the flash drive if possible as the computer is UEFI the flash drive may not boot unless the MB can sense it being formatted FAT32. If the flash drive does not boot then try tapping F11 at boot to access the boot menu. If you can get the USB flash drive to boot using FreeDos you will boot to a command prompt. It may be A: or a different letter. Type Dir at the prompt and see if the two files you copied are present. If not you will need to try a different drive letter at the prompt.
i.e. type B:\ <enter> and do the Dir command again until you see your two files. When the files are listed type the following command to flash the BIOS.
This should start the flash. After the flash is complete reboot your computer. Tap F2 at boot and reset your UEFI/BIOS settigns. Hopefully it works and the computer is not bricked.
Edited by JohnC_21, 16 June 2017 - 12:38 PM.