ZIP archive of 573 KB for the Gigabyte GA-H61M-S motherboard, an entry-level H61 micro-ATX design. The name does not say what is inside or which board revision it covers, so open it and identify the files. Service documents of this kind help locate the PWM controller, power MOSFETs, BIOS chip and test points, and trace why the board stays dead. If a firmware image is included, keep a copy of the existing SPI contents and check the image size against the chip before writing.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @cyberlanelectonik. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Built-in OS tools7-Zip