I can also confirm that the previously attached 2.90Q bios works for nvme, however, it crashes every time on resuming from sleep when using an intel750 as the boot drive.
Booting from another device and trying suspend-to-ram mode shows that the i750 device does not come back properly.
After using UBU to update the integrated RST blobs (also did the integrated graphics blobs and latest microcode updates), the system now resumes from sleep.
For anyone trying NVME+Asrock z77 extreme4, consider trying the attached bios. As usual with these sorts of things, your hardware, your problem if anything goes wrong. This works for me though
Edit: Disabling CSM is not necessary, but booting the os install media in UEFI mode is.
For those needing to make a win10 usb installer, try using the RUFUS tool in GPT+UEFI+NTFS mode. The win7 dvdtool does not work.
mod_Z77EXT42.zip 4367k .zip file