Hello guys,my name is Vily.I wanna share my problem with my motherboard and its ram banks,which are DDR2 and DDR3 both with 2 banks of each. I bought yesterday 2 ram pieces,each with 4 Gb,DDR3.Until now i owned just 2 banks with 2Gb of DDR2 each,so 4 Gb. So the motherboard has both types of ram banks,DDR2 and DDR3.Problem is that,i put all 4 banks in ,yesterday,and didn t seemed to work,my computer did't showed anything on the screen,so i was wondering on an old thread from this forum was sharing the same thoughts but i couldn't replay there cuz now it's closed.The question is:i did a mistake and the pc didn't responded yesterday?I should try again or they simply don't work together,all DDR2 and DDR3?(The ram speeds are different from DDR2 to DDR3). The motherboard is the one i named in the title of the thread. Info on the motherboard: http://www.hardwaresecrets.com/article/ASRock-N68C-S-UCC-Motherboard-Review/1048 Thank you.