Hi, I own the Crosshair V Formula (not the Z revision) and because I may have an opportunity to obtain an FX 8350 very cheaply decided to update my BIOS from the 1402 version I was on to the latest 1703 for the new CPU support.
I used the EZ Flash utility in the BIOS and sucessfully updated it, booting in to it and it reporting as the 1703 version. However, since updating I have not been able to boot my Mint Linux installation. I have been able to boot a live USB version (which interestingly now displays a short message of "Secure boot not enabled" between the F8 boot menu and the GRUB bootloader, which I don't remember being there before). I have used this live USB to confirm nothing in my installation has changed since I powered my PC down to update the BIOS. I still have an intact FAT32 EFI partition with a boot flag.
I have been through everything in the BIOS and cannot get my installation to boot whatsoever. I initially started with Load Optimized defaults and have confirmed in the BIOS that my disks (OS + data) are connected and the boot order is right, but cannot even boot from the F8 boot menu as it tells me something along the lines of 'Reboot and select proper boot device or insert boot media in selected device and press any key'.
I would be extremely grateful for any help provided and will endeavour to provide you with any information you need.
Currently using a FX 8150, 2x8GB Corsair Vengeance LP @ 1600MHz, 128GB OCZ Vertex 4 for OS, empty 750GB Seagate HDD and 3TB Seagate HDD for my data.