I've been using 1 stick of ram for some time it's the ADATA 8GB 3000MHz XPG Z1 Gold CL16 I could find an identical one anywhere but I wanted to have 16 gb in dual channel, so I bought G.Skill Aegis, DDR4, 8 GB,3000MHz, CL16
and it doesn't work, ram is in correct slots, 2nd and 4th, and it only shows 8GB in the system, it says that 8GB is reserved by the hardware, and when I use frequency higher than 1067mhz, it boot loops