not sure if motherboard issue(most likely is because one of my ram literally caught on fire somehow guessing short circuit? for a few seconds and wiped out at least that d-ram slot and possibly the one next to it for the longest time I've only been able to use 1 slot but decided to give it another go and able to now get at least 12gb but wanting more or the maximum my motherboard is suppose to be able to at 24gb. i have an asus sabertoother x58