Question Win 10 bootable USB not working on z390 designare

[yoni1974]

I'm having trouble trying to install win 10 on a new PC i built. Here's my config:

Motherboard: Gigabyte Designare z390 CPU: intel 9900k

GPU: Asus Rog Strix 2600 Super

Ram: 16MB xpg 3600 DDR4

Empty MM2 drive

I've created a bootable win 10 pro USB key (UEFI) under Mac (thats the only computer I have). I've inserted it into a USB 2.0 at the back of my motherboard on my new PC. The Gigabyte bios sees the drive and I've changed the boot options to the USB. Now, no matter what changes I perform on the Bios (CSM disabled, Other OS selected etc...), when I restart the computer by saving the changes, it doesn't prompt me into windows install, instead it goes back to the Bios. I've tried everything under the sun, even with an external SSD plugged via USB.

Some details: Files are unmounted inside the USB drive.

The drive is formatted exfat using disk utility (mac).

I've tried plugging into USB 3.0...it doesn't work.

CSM disabled or enabled....same result.

Other OS or windows 8/10....same result.

Does anyone know what is the problem and how can I install windows on my new machine if I only have a Mac in my possession.

Thank you

 

[Phillip Corcoran]

ExFAT is no good for this task. The USB pen drive has to be formatted to FAT32.