Download the original Alienware unmodded A03 bios from Dellat Drivers and Downloads | Dell [united States] The file is named "M18R2A03WIN"
Extract the contents of M18R2A03WIN to a new folder named "Alienware recovery" anywhere on your useable computer. In there you should have a bunch of files. (9 in total)
Look for the one called QBR10EC.fd
Rename this file to M18R2.hdr
Place the file M18R2.hdr on a formatted fat32 usb stick on its own.
Thats it. Blind created
Recovery process:
To do the recovery process you need to remove your m18x r2 battery.
Unplug the back power cord as well
Plug the usb stick with the file M18R2.hdr in the M18X's e-sata port
Now hold down the END key (located above the numbers key pad) at the same time while your holding the END key plug in the power cord only, you will hear the fans turn on full bolt.
Release the end key and wait
After a few seconds once the file is read from the USB stick you will hear 20 or 30 beeps (sounds like a garbage truck reversing)
After the beeps stop the m18x will shut down and reboot itself. ( 1 or 2 times depending)
Once reboot all will be back to normal A03 bios.
Connect the battery back if you wish after successful boot.. That's all folks, things should work now unless you bricked the EC controller, which is hard to do.