Well, I've been out of town for a week but was able to work on my system today to try and get it working. Ever since installing my new H100i and custom sleeved cables, my Asus Maximus VI Formula ROG MB has been giving my a Q Code 55, which means a problem with the memory. I've taken the memory out, tried 1 piece at a time, still won't boot. I unhooked my H100i completely and put the stock CPU cooler on it and it still won't boot. I just spent $200 ordering replacement memory, which hopefully will come in today, and if that doesn't work, then it's gotta be my MB. I also pressed the MemOK button, and it starts flashing slowly, then it gets faster, and then faster blinking and then it stops. I have no idea what this means, but I'm still getting an error 55 Q code. Also, the DRAM LED next to where the PSU hooks up to the 24 pin, or however many it is, stays lit. Again, this points to memory problems. When my new memory arrives, I'll be able to change out my current memory with new memory, and if this doesn't fix it, then I must have a problem with my MB, which is about 3 months old. I'very reset the BIOS, unhooked everything that's not absolutely necessary, pulled out my graphics card since resetting the BIOS will probably reset it back to using the on board graphics display. I wish I had more parts at my disposal to swap out, but once my new memory comes in, and if it still doesn't work, then I'm about 99% sure I have a MB problem. If anyone can think of something else I could try to narrow things down, please let me know. The good thing about this Asus MB is this Q code display and the LEDs that light up if you're having a particular problem to help pinpoint the issue pretty quick.