Thanks lightspeed, I just didn't take into consideration that Ultra Hal program recognizes the Windows 10 update as a new system. Most programs accept the update and continue without interruption due to the fact Windows 7 leaves enough information within update process. As a matter of fact Windows 7 does not leave your system at all You will see it labeled as "Windows Old" so you can return to Windows 7.
This only happened on one computer and I guess it could have been anything. There is probably a difference also with the version you upgrade such as Windows 10 Home / Windows 10 Pro. Depends on the version of Windows you had installed prior to update although you can update to Pro anytime but will cost.
I was curious if anyone experienced similar hick-up with Windows 10 update. NOTE: all other computers I updated worked just fine.
Thanks,
raybe