do you mean the system basically skip bios and go into windows directly or hang black screen?
If it skip bios, try using windows command prompt (admin) and enter "shutdown -r -fw -t 0"
see if system reboots to BIOS.
Hi and thanks for the answer. Worked and have updated bios. And thanks to all the others who helped during my rebuild. My build is : CPU i512400 NVME samsung 980 and 850 ssd M/B B660m-a pro 16GB ram all works gr8 and dam fast too. Thanks again. Al