Hi I just built my own gaming PC, this is new for me I haven't done it before, and I successfully ran through the bios settings and got all the peripherals set up. I made the cd drive my first boot priority and my HDD drive my second but when I try to boot up it goes to a screen that says "insert boot media and press a key" even though I have the Windows 7 operating system in the drive. I have an AMd athlon 2 270 CPU, a Biostar 8960 D+ motherboard, a sapphire Radeon HD 5450 video card, seagate 1tb hdd, 2 gigs of ram, a 480w power supply, and I've tried using 2 different optical drives that use ide cables. I have everything set up perfectly so why won't it start? I even tried loading another operating system, and still the same insert boot media screen and press a key. When I press a key it just duplicates the text!! Please help me!!!