Sometimes I hate updates...
if you can, on another pc download this and make a Win 10 Install USB:
win 10 media creation tool
its just a boot disc if nothing else
change bios so Laptop boots from USB first, SSD/HDD second
boot up installer, on screen after language choices, select repair this PC not install.
select troubleshoot
select advanced
select Start up repair - this will scan pc and maybe fix start - will ask for logon info
Another thing that might help is just booting into safe mode
boot from installer, select repair PC again
select troubleshoot/advanced/start up options
on next screen, should get choice to select from 3 safe modes, choose one of tthem (it doesn't matter which)
Laptop will restart and load safe mode...