how under the vista system moves dark destruction god 2:00 CPU to account for 50% to solve?

My computer is the AMD4000+ binuclear, 1G memory
But I played when recently the dark destruction god, as soon as opens CPU to account for 50%, remembered I just bought back new computer’s time opens 7 dark windows is not such? Which prawn could help me a attention to let me return again formerly?
Perhaps was your engine case interior the very long time has not cleaned up the dust already for to make yours each ventilator is very slow