@CaseySJ Finally I got it to work as you said. I needed to allow MSR02 to be able to reboot on the Mac OS Catalina SSD. When I Shut down the computer I tried to Start again the computer to see how it was working.
But now the computer starts one second then immediately shut down. The motherboard stays illuminated as it was in sleep mode. Each time I press Start again it shut down immediately. Doesn't seem to be an Hardware problem (everything is Brandnew).
Does it make you think of something special causing this ? Most of the time I can overpass this Switching PSU off then waiting 5 minute, then Turning on the Computer, which does make me think its not an Hardware Issue.
"Boot Failure which can be due to invalid Bios settings".
All bios settings are done as you advise.
This is my config :
- Designare Z390 - F8 BIOS
- Sabrent NVME 1TB- 2280 (Windows)
- 970 Pro Samsung - 1TB - Catalina
- I9900K
- Saphire Nitro Radeon RTX5700 8GB
- FenVi T919
-RX750 Corsair PSU
- 64GB Corsair Ballistix-3000mHZ-Cas 15
1) Could you link me some amazon 1 TO cheap SSD 2.5 for saving the BackUp ? A cheap SSD External Housing ?
2) I Haven't Put any Thermal paste on the CPU (I'm Using Corsair Hydro H100x) : on the instructions its written that its not needed because there is some included in the Water-cooling.
Thank you