how did you get an AMD 2400 into this motherboard re following excerp from specification:-
Install A CPU
This mainboard has a Socket-A which supports AMD K7 processors.To ensure reliability, ensure that your processor has a heatsink/cooling fan assembly.
Do not try to install a Socket-370/Socket-7 processor in the Socket-462. A Socket-370/Socket-7 processor such as the PPGA Celeron, FCPGA Pentium-III, Pentium-MMX, or the AMD K5/K6 does not fit in the Socket-462.
The following list notes the processors that are currently supported by this mainboard.
Athlon: 650 MHz~1.4 GHz, FSB: 200 MHz, 266 MHz
Duron: 550~950 MHz, FSB: 200 MHz
the max is a 950 duron