"Where does it hang? BIOS, or Windows? Have you increased the levels of reporting in BIOS/Windows? (Those messages can, at times, be helpful.)"
The system did not hang, HP Sure Start screen loaded with timer keep rolling so I assume Windows was booting up. But there is a brief moment, the screen went blue prior to windows user login screen.
Regarding the increase the level of reporting:
I do not know how to increase level of reporting. Do you mean ENABLE BOOT LOGGING ? The resulted log is partially as follows:
BOOTLOG_LOADED \SystemRoot\System32\Drivers\Beep.SYS
BOOTLOG_LOADED \SystemRoot\System32\drivers\dxgkrnl.sys
BOOTLOG_NOT_LOADED \SystemRoot\System32\drivers\dxgkrnl.sys
BOOTLOG_LOADED \SystemRoot\System32\DriverStore\FileRepository\ basicdisplay.inf_amd64_307898c750ba9e44\BasicDisplay.sys
BOOTLOG_NOT_LOADED \SystemRoot\System32\drivers\dxgkrnl.sys
BOOTLOG_LOADED \SystemRoot\System32\DriverStore\FileRepository\ basicrender.inf_amd64_ba2a8de08ea0d469\BasicRender.sys
BOOTLOG_LOADED \SystemRoot\System32\Drivers\Npfs.SYS
BOOTLOG_LOADED \SystemRoot\System32\Drivers\Msfs.SYS
BOOTLOG_LOADED \SystemRoot\system32\DRIVERS\tdx.sys
dxgkrnl.sys is not loaded >> Does the graphics card cause the problem ?
"What happens when you boot up with the 4TB disconnected, and the 10GB connected (to the same port if it too is SATA)?"
The drives of 4tb and 10tb are all SATA.
With same SATA port, same cable, 4tb drive, the system boots up in less than 30sec.
Whereas swapping it with the 10tb, it take over 10 min spinning the drive before sucessfully boot up.
I have tried all sort of combinations to boot the system, both at same time on SATA 0 to 5, swapping cables, changing SATA port, changing new SATA cables, etc... but to no avail.
I do appreciate your posting/replying to this post.