Re-installed my A7N8X-X that was previously overclocked with a 2600+ cpu. Took out any hardware that was connected. Now even with same CPU or a different one a 3200+ the mainboard returns a short 1 second beep about every second, when the CPU and fan are connected. Is this mainboard toast, or there any other possibilities before I get another board. PS I took the system battery out and did re-set the BIOS twice before attempting this.