I can get into the OS by disabling driver signing on the way but it doesn't seem to stick for the next boot. Is there some way i can disable it permanently, or at least until I find out what the problem is?

Also, a new setup (BIOS?) has appeared since I put win 7 on it, it lists the disks and asks me to create a RAID drive but it doesn't show a boot sequence. The normal Z390E Bios doesn't seem to have a clue about the new disks I've been adding, they're not part of the drop down list and I have to choose the boot disk every time. How do I get out of that?

If Windows Repair can't fix the boot issue, what's the next thing to do, scannnow?

Thanks - rev