After much effort, we found a solution that worked. Go into BIOS (press F! as the computer boots), go to the Security tab and disabled Lenovo service engine. Then computer booted up, finished the Windows update and is now working!!!
Afterwards, we found this information about the service engine:http
/news.lenovo.com/news-releases/lenovo-statement-on-lenovo-service-engine-lse-bios.htm
and this article on this site:https
/www.tomsguide.com/us/how-to-lenovo-bootkit-removal,news-21456.html
I hope this solution works for others who are having similar difficulties.