Welcome to BC!
You need to start isolating the MB from connected peripherals... disconnect any ODs, memory card readers, USB boards, etc, from the MB. Then see if it boots up. If that is No Joy, then selectively start removing RAM and/or changing the slots they plugin to. See if it boots up. If that is No Joy, then you will have to get serious, you will need to "breadboard" your system.
Here is a video on BBing ... http://www.youtube.com/watch?v=aEP3OLZvMm0
But I do suspect the MB/CPU has died.
Ground yourself momentarily to the chassis before working inside a PC case. BE CAREFUL, there are voltages that can injure you when working on electronics.
Let us know.
Edited by ElfBane, 02 November 2014 - 04:19 AM.