I just got a Maximus VI Hero today with a 4670k (birthday present from my wife and whole family). This is the 4th computer I've built and I've never had any issues. After I finished the installation and wiring I powered on the system and it was turning on and off, the post led was going crazy. A couple minutes later there was a pop and a really haggard smelling smoke became visible behind my Kuhler H20 920. It looked to be around the VRM heatsink so I took off the radiatior and did some trouble shooting. I tried plugging 1 fan in only directly to the 4-pin CPU fan connector instead of using the "hub" that is attached to the cooler. Nothing worked. I then took out the stock Intel cooler and I wasn't getting any spinning. I kept getting an AMI bios "cpu fan error" message. I then tried plugging the fan into the CPU option and it spun. I had to do some fiddling in the UEFI to get the error message to disappear but it eventually did. Should I return the board to the store I got it (Canada Computers), RMA it or just make do with the stock cooler running on the option header? The fans I had on the Kuhler 920 didn't work plugged into either header, Corsair SP120's, not sure if those fans are dead. Anyone have any insight with this?