Supports video adapters: Nvidia 9300m Gs from the Asus M50v model, X57v ...., Nvidia GTX260m from the Asus G60VX model.

You must understand that you perform all manipulations with your device at your own peril and risk !!!
You can flash through the firmware in the Bios of your device ("F2" at startup, then "advanced" and find something similar to "flash utility", specify the path to the file (preferably a usb flash drive in FAT32), etc.