I put my new build together today and put in a previous used hdd with xp and everything on it. When turned on it checks all the hardware then says disk boot failure, insert system disk and press enter. I installed a blank hdd and had the same failure. In the bios I found my hdd under ide 04 master so it does recognize it's there. My mother board is a gigabyte ga ep45 ud3r . Is my problem as simple as reinstalling windows? Sorry for the bad typing and undetailed post but I'm currently computerless and am stuck using my iPod to post this thread. Thanks in advance