Hi my name is dyllon, i have a gateway DX4860-EF16P Specs: intel i5 3450 16 gb ram ddr3 2tb hard drive dvd-super multi drive AMD radeon HD 7470 2gb ddr3 Bios P03-A3 so my problem with my desktop is my graphics info in About This Mac says unknown 3mb. so i can't hear any sound (using HDMI cable) and i can't play dads, mp3 in iTunes don't work and mp4. and my boot loader won't boot, i have to use another drive thats format is master boot to boot from the boot loader. everything else is working, i can see the desktop and everything. well small things don't work like my LAN to connect through WIFI but i can just plug in though ethernet.