My newly built computer's first boot worked fine, and I went into the BIOS to change things. The only thing I changed was the date, admin password, DRAM Frequency (from "Auto" to "1333Mhz", which is the frequency my RAM came with), and boot sequence (replaced 1st boot - USB Harddrive with 3rd boot - CD, my optical drive). Then I went to "Save and reboot" and now my computer keeps turning itself off and turning back on before the internal speaker's beeping. Nothing shows up on the screen. Does anyone know what the problem may be?