Hi Prometheus1 and Maths84 and Welcome to ROG
If you wish to update your Bios, you can use the ROG connect port on your IO panel.
1. Go to ASUS Support here:
http://www.asus.com/Motherboards/CRO...Desk_download/ 2. Download the latest Bios file 2101, and at the same time go to the Utilities section and download the Renamer utility.
Both these files should be downloaded to an EMPTY Fat32 formatted USB stick.
3. Activate the renamer, This will convert the bios file to CVFZ.CAP and check that it has done its job.
4. Power down your system so that only power to your MB is available. Peripherals can be left connected.
5. Insert the USB stick into the USB flashback port on your IO panel. (refer to your manual if not sure, page 2-12 & 2-13)
6. Press the ROG Connect button for 3secs until it starts to flash, When it stops flashing, it is done.
Do not turn off power during flashback.
You don't need a CPU, GPU or even the cooler connected with this method.
@Maths84
Your error code 66 (DXE initialization has started) can be one of a number of things.
DXE (Driver Execution Environments), once system RAM is initialized and the PEI phase completes, the DXE environment is entered. The Platform Controller Hub (PCH) Some northbridge functions, the memory controller and PCI-e lanes, were integrated into the CPU while the PCH took over the remaining functions in addition to the traditional roles of the southbridge.
Some of the usual things are bad contacts or bent pins in the CPU socket, Poor thermal contact between CPU and cooler or a bad mounting of the CPU, or even inadequate power to the CPU ( both 8pin and 4pin sockets should be populated if you intend OC). A short between MB and stand off pins. Could be your Dimms, have you mem-tested each module with Memtest86?
All these have to be ruled out and bench tested outside your case.
Hope this answers both your questions.
BTW, Have you read this guide for installing the H100i.
http://www.corsair.com/en/blog/2013/february/how-to-install-the-hydro-series-h100i-cpu-coolerMM
We owe our existence to the scum of the earth, Cyanobacteria
My System Specs:
MB:ASUS ROG Crosshair VII Hero/WiFi GPU:EVGA GTX 1080 sc PSU:Corsair AX-1200i
CPU:AMD R7 2700X Cooler: Corsair Hydro H115i Case: Corsair Carbide 780t
Memory:G.Skill TridentZ F4-3200C14D-16GTZR SSD:Samsung 500GB 960 EVO M.2
[/HR]