Unable to change hdd properties. I bought a new pc and ordered a 1tb hdd but the guy put in two 500gb drives and when I try to enter the bios to change drive properties ( I was told to set drives to raid zero), I get something called Asrock UEFI setup. Does this replace normal bios. I would appreciate any help. I have tried altering file path when I save docs but this doesn.t work. I am running windows 7. Thank you.