Hello I hope somebody can help me. I have an 820-2850 Board Everything is working fine. It is 8GB, 2x4GB (1)If I stick in the slot near Keyboard the 4GB RAM then its not working, after turning on, the fam begins to work, the sleep Led is blinking 3 times and I can hear 3 peeps after a while again and again the beeps. (2)If I stick the same RAM in to the slot near the bottom everything is working fine. Both RAM the same result like in (1) explained. So what did I do 1. PRAM reset 2. SMC Reset 3. Reballed the GPU 4. Reballed the Northbridge Result tis still the same. I know that the Memory controller should be in the CPU isnt it? So should I reball the CPU? But I messuared in the RAM Slot. (Its DDR3) CKE0, CKE1 is there RAS, CAS, WE Signal is there so I think the memorycontroller is working so on VDD SPD 3V is there I guessed could be the termination resistor with a defekt. Should be able to find on the resistors 0,75V but, funny, I dont find the resistors? In the Schematics I cant find as well? Can u help me? Do u have any other Idea? or an Idea where could be the resistors for termination. thanks a lot.