I have an MSI z97 motherboard and i have been using 1x8gb stick for my first few months but recently ordered the exact same stick so I can have dual channel ram. Now when I go to install it (in slots 2 and 4 like it says on the mobo) my PC doesn't turn on (lights on GPU, fans etc turn on tho. Then if I try just launching with just 1 of the sticks it works (tried the new one alone, it works, I've tried all combinations of slots aswell. I also enabled XMP which didn't help, and I've taken on that CMOS battery for 30 secs. Any help is appreciated