Originally Posted by
Jhieminga
Have you checked the manual for the motherboard? I'm not familiar with Gigabyte boards but the pattern of beeps used to be the way to tell which part was misbehaving in situations like these.
This is a real long shot, but has worked for me in the past....
Unplug everything to do with the system...and I mean everything!
Leave it unplugged for about 30 minutes or so and when you are certain that the power supply is back on and stable, plug everything back in, bit by bit, until everything is connected...then and only then, start pressing the 'on' buttons.
Try it and fingers crossed, it will work for you.