Hi
amnon23e and Welcome to ROG. As you have the latest Bios.
Make sure UEFI is enabled in the BIOS, ensuring CSM is enabled.
Make sure everything is set to either "Legacy and UEFI" or "UEFI only" (it should be in Legacy and UEFI by default).
Then, make sure to boot to your install media using the correct boot device.
When you boot to the media as a UEFI device, Windows will automatically install in UEFI mode.
Also check temperatures as these cards run hot.
Hope this helps.
We owe our existence to the scum of the earth, Cyanobacteria
My System Specs:
MB:ASUS ROG Crosshair VII Hero/WiFi GPU:EVGA GTX 1080 sc PSU:Corsair AX-1200i
CPU:AMD R7 2700X Cooler: Corsair Hydro H115i Case: Corsair Carbide 780t
Memory:G.Skill TridentZ F4-3200C14D-16GTZR SSD:Samsung 500GB 960 EVO M.2
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