DAVOIID

Hi guys i have some troubles in my ram dimms i have 2 kits of corsair vengence pro rgb i allready have instaled a kit and my pc works whyout a problem i just recently purchased i new kit when i is instaled creates a conflict between my old dimmms and the new ones i can start my pc but only one kit of rams never the kits at same time sorry for mi english i new in this