congratulations 🙂 you can handle ssd like hdd.

in the bios, the only thing i can think of is to change the sata operations to ahci. the rest should be simple: if you're running stock w8, just use backtracker to create a recovery usb and proceed with it. if it's a stock w7, you can download the drivers from asus support page and a legal copy of w7 and do a clean install.

good luck.