Been a while since ive needed help, got a new mobo (msi z77 mpower) and trying to install win7 and xp from usb drives and having difficulties... Before its never been an issue on asus boards, i just set usb drive in bios to HDD, selected IDE for xp and then installed. Now ive tried different formats of usb (ntfs and fat32), unplugging everything, boot devices, priorities, different sticks and still no luck. There seems to be no option for different types of usb, only the stuff in priorities. Where i would usually get ''press any key to boot from usb'' i get a flashing line. Also using rufus, win7 usb tool for formatting drives. Help?!