Originally Posted by hrdwareguy

Take all the hardware out (with the exception of the processor) and try to boot the machine. If you get beep codes start putting stuff back in one piece at a time until you can get into the bios and reset the settings.

If still no go, then take the motherboard out and set it on a piece of cardboard or some other non-conductive surface and try and power it up. If it works, put it back and try again following the same steps as above. If it doesn't work, take the processor off and try. If it works, the processor is probably gone, if it doesn't work, the motherboard is probably gone.