I have a ASUS Netbook (X200CA) that has received the free Win 10 upgrade a year or two ago. It recently went about it's business and installed one of the many Win 10 updates and has never been able to recover since that time (around 12/25/17 or shortly thereafter).
It gets to the blue Win 10...
asus
boot issues
cbs log
command prompt
error logs
free upgrade
isorepair
loop
netbook
recovery
repair options
settings
system restore
tech support
troubleshooting
update
user query
windows 10
windows repair