It is possible to make the BIOS Auto-Recovery kick in (Dual BIOS) and re-flash the MAIN BIOS with the contents of the BACKUP BIOS.This is a simple and easy method for anyone to try before having to resort to other more difficult methods, or a RMA.1. Shut off the power supply using the switch on the back of the PSU, wait 10-15 seconds.2. Press and hold the case Power On swtich, then while still holding turn on the power supply from the switch on the rear.3. Still holding the case power on switch, the board will start, once it does release the case power on switch and shut off the power supply via the switch on the read of the unit. (Do the latter two parts as quickly as you can once the board starts)4. The board will shut down.5. Turn the power supply back on using the switch on the rear of the unit.6. Turn on the motherboard by pressing the case power on button.Once the board starts this time you should see the Gigabyte splash screen, or POST page, then the Auto-Recovery from Dual BIOS will kick in. You will see a checksum error, and then recovery from BACKUP BIOS will begin. Once it is done reboot your machine and enter the BIOS and load optimized defaults then save/apply/reboot back to BIOS. Now you are done, and will be using whatever BIOS was in your BACKUP BIOS, From there you can attempt whatever you were previously trying, or update your BIOS to the latest version.
I did remove the plastic from the CPU cooler prior to putting it on, but I did not clean off and replace the TIM when I later removed the cooler (and CPU) when trying to resolve the initial stability issues. In retrospect I should have done so to provide a smoother conductive surface with new TIM, but I guess I had other things on my mind at the time.
You never said if I should be expecting to see the OS report 6GB RAM if it is running the 12GB of installed sticks in dual channel configuration, should I be seeing 6GB or 12GB in all the places the OS reports RAM sizes?