Your download link returns a 'file not found' error suggesting the file had been taken down. I seem to have bricked my G75VW's BIOS (supposedly by resetting the BIOS to optimal settings) and am looking for options on how to get it up and running again. However, I don't own a chip programmer so I'm unsure on how to complete such a task.
I've read through the entire thread and have tried the CTRL+HOME button method numerous times. My G75VW does indeed respond to the key combination by dimly lighting up the HDD LED, but it then restarts and does nothing at all (indicated by the audible DVD/blu-ray drive and the backlit keyboard switching off and lighting up). I've managed to recover my G75.BIN file from my drive through the use of recovery software on another system and have copied it to an empty drive and a USB stub (both formatted to FAT-32).
THE BIOS CHIP FROM THE SECOND SOURCE ARRIVED AND IT WORKED !
I also managed to dump the file from the chip so:
FLASH THIS FILE THAT WILL REVIVE YOUR G75VW. FLASH IT WITH A PROGRAMMER (YOU WILL NEED TO UNSOLDER THE CHIP, PROGRAMM IT AND THEN RESOLDER IT).
Hope it helps millions of G75VW owners as it worked for me.