Take out everything but RAM, CPU and Video card. Take motherboard out of Case, and place on something hard. Then try booting.
If it still does this, as in no beeps, no response, just fans spinning, then Take out the RAM, then try rebooting. You should get Beeps indicating no RAM, If you don't, you may have a bad motherboard or CPU.
Note: whenever you touch any part inside a computer, it should be off and you should ground yourself before touching it.