I recently bought a Asrock Z75 Pro3 motherboard but when I got it and look it the bios it didn't have the option for me to change my cpu voltage. Like it doesn't show up at all. I read that I have to turn off power saving mode but there's not power saving mode either. I have also updated the bios to the latest version but nothing. Please help. I really want to overclock my cpu to 4.5-4.9ghz. I'll try to get a picture of the bios up as soon as possible. Thank you.