New
#11
I think I may have found the issue.
I took out the other stick as you said and my PC instantly booted as usual. But like you said the motherboard has a memory calibration routine so maybe I didn't let my PC run long enough when I had the other stick plugged in that didn't post? Referring back to when I had the other stick removed, I let my PC run for about one or two minutes before shutting it off and plugging it back in.