CPU/Processor (Brand,Speed, FSB,Cache Size) = i7 2700k @ 3.5 GHZ
Memory (Speed, Capacity, Brand) = Corsair Vengence DDR3-1600 (CORSAIR Vengeance 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model CMZ8GX3M2A1600C9B)
Video Card (Brand, Model, Memory size) = IGP
Operating System (Loaded service pack and driver) = Windows 7
Hard Drive (Brand, Model, Capacity) WD 750GB, Seagate 3 x 1TB
Other Device (Brand, Model) * If necessary

when i try to put in dual channel memory on A1 & B1, i got an error msg. since i got an error msg, i try to put it inside my other pc and it boot up fine. since A1 & B1 is not working then i try A2 & B2 to see if it work or not. Also it doesnot work at all. but when i put it in second slot ( i think that is B1) near the cpu, it works fine. at that time, i am using only one stick.