Hi
Today I started up my X79SI and it couldn't start from my SSD, and I've been unsuccessful to get it to boot from DVD or USB drive either.
All of the drives can be seen in BIOS, it just doesn't seem to now how to start loading Windows.
Apart from booting off the different media types, I've already upgraded to the latest BIOS (594) via F7, and done a BIOS settings reset via F9 as well.
The exact error message I get is
A bootable device has not been detected.
Please refer to the Product Guide at http://support.intel.com/support/motherboards/desktop
Any other suggestions?