HI, Recently upgraded my processor and now I cant get dual channel to work on this board. Have latest BIOS, and dual channel was working before I had to remove/reinstall the RAM in order to replace the CPU. Both sticks are still good -- verified that they will boot in slot 1, and am currently using them single channel in slot 1/3. Tried dual channel in both 1/2 and 3/4 with same result. Gigabyte tech support is trying to blame the new processor's memory controller. What is most likely the culprit -- motherboard or CPU? I am using Patriot Viper 3 at stock settings. CPU is 4790K also currently at stock.