Restart your PC and press Del , F2 , or F10 to enter BIOS setup. Look for:

The ECS H61H2-MV is a legendary budget motherboard from the Intel LGA 1155 era. While it served as a reliable foundation for Sandy Bridge (2nd Gen) processors, many users running this board today face a major roadblock: upgrading to Ivy Bridge (3rd Gen) CPUs or installing modern UEFI-based graphics cards (like the GTX 10-series, RX 500-series, and newer).

ECS motherboards often feature an integrated flashing utility called eBLU (ECS BIOS Live Update) or a direct tool inside the BIOS menu. Keep the USB drive plugged into the computer. Restart your PC.

Most AMI BIOSes have a safe boot block:

Boot your computer using a FreeDOS bootable USB (created via Rufus).

Where to obtain BIOS updates