Here are our recommendations to narrow this issue:
1. Please, place the board over a non-conducting surface. Just plug in the power supply, the video card, minimum amount of memory, and the processor, and try to boot up. In some cases a metal piece coming from the chassis could cause grounding to the board and would not operate normally or could be caused by another component as well.
2. Test with a different power supply.
3. Test the system without any memory installed looking for beep codes.
4. Clear the CMOS battery and restore defaults in the BIOS. Ensure yup have the latest BIOS version for the motherboard: