Ok If anyone sees this thread please respond for an answer, so I have eliminated most of the possible suspects for my problem, replaced the motherboard, noise is not coming form PSU, I am pretty sure it is not the ram causing the problem,I tested the system with other ram and there was no red led on the memok light but the noise is still there, the heatsink is not causing the problem either, my guess the noise is being caused by the voltage my apu is receiving, i read somewhere it could be the power saving EPU feature can anyone suggest a solution.