One Stick of RAM Works, but more than that, I get a boot loop...

madrunks

Reputable
Jul 21, 2015
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hello everyone. I am using Corsair Vengeance DDR3 1866Mhz RAM, 4x8GB Sticks. I am using an ASUS Z97 Mark S Motherboard. It boots no problem with one stick, once I place another stick, it boot loops. I've updated the BIOS and that didn't work either.

update:
ok, so I tried A1 & A2 and it works just fine. I"m assuming B1 & B2 are defective or need to be activated somehow.
 
Solution
Do you have a third party cooler like a 212 EVO or a Cryorig, many people overtighten them down in a corner or side which can make a channel appear defective, try loosening the cooler then snug it down screw tight and see