If you are moving from a very old BIOS to a version that supports Windows 8/10, you cannot simply flash the latest file. You must use the or the specific Windows 8 upgrade utility provided by ECS. H61H2-MV｜Motherboard｜Products - ECS ELITEGROUP
Select the USB drive and follow the prompts to flash the new firmware. ecs h61h2mv bios update portable
afudos.exe H61H2MV.ROM /B /P /N /C /X