I have a ASUS Striker extreme mobo with an intel 2.4GH quad core processor(6600 i think). I also have a nvidia gforce 8800GTX pci-e card and a 74GB(clean) SATA hard drive installed. I have 2GB of DDR2 800MH(which is compatible with mobo) RAM installed as well. also, 700WATT PSU. I have a cdrom drive and dvd drive set up as master and slave. I have bought every component seperatly and installed them myself. I am trying to install windows vista Ultimate DVD 64 bit version and its giving me "DISK BOOT FAILURE" when i put it in the crom and dvd drives. I have already changed the boot sequence to cdrom, hard drive, removable. Please help. p.s. i cleared the cmos and also went into bios and set default settings to solve another problem.