Acer laptop restarting

[Yanelisa]

Hi
I have an Acer Aspire E1-571 that for the past two hours has not been rebooting nor restarting.
It displays the message:
"Failure configuring Windows updates
Reverting changes
Do not turn off your computer."

What should I do now?

 

[popatim]

let it finish undoing the changes is what always works for me