2x 8GB Crucial DDR4 3000mhz
GTX660TI (old! D:)
It's a basic setup, for my little brother's first gaming setup. Everything when fine during the setup, with one odd hiccup. The PC only boots with one RAM stick. I know how to insert them into the proper slots, and made sure they are seated properly. Troubleshooting I've tried;
Both RAM sticks work fine. It doesn't matter which one I use.
Every slot works fine (with just one in it).
It doesn't matter if I use A or B slots, or if I try to mix, just for fun.
I even tried inserting RAM stick two while it was running, then restarting the PC. It worked, but only recognized one stick. That was odd, too.
If there's more than one stick, the PC won't even get to the point where the monitor light goes green and it initiates BIOS. I've reset CMOS and tried just about every troubleshooting step I can think of, but it simply will not allow two RAM sticks. Any ideas? Thank you all so much!