After 5 Months of continues Delays from Dell saying that the Dell Precision 5760 (11th Gen - i9 - 64 GB Ram) is supposed to work slow on boot time, we found that the Hardware had problem by accident.  Suddenly the Laptop stop working and we changed Ram - Fans and Hard Drive.  After this the Precision is finally working Fast. Keep in mind that the Support Assistant hardware check was saying that all the hardware was ok but eventually it wasnt.  One think i can say is that Dell has no idea (at least in Greece) how their Computer Work causing me loose time and money for 5 months.  problem is solved but my lawyer is on the way to Dell.       
Precision 5760 -  Booting Time 2 Minutes since day 1 - Dell cant indicate a problem and they cant fix it  Operating System Microsoft Windows 11 ProProcessor 11th Gen Intel(R) Core(TM) i9-11950H @ 2.60GHzGraphics Card NVIDIA RTX A3000 Laptop GPU (6,0 GB) / Intel(R) UHD Graphics (1,0 GB)Memory 52,6 GB Free (63,7 GB Total)  
Precision 5760 Workstation really slow boot time (2 minutes)