My system has a black screen keeps telling me updating how long

[margie.hosie]

System says updating black screen do not turn off how long does this take it has been 4 hours

 

[Ralston18]

Depends on the system being updated.

The update process will only be as "fast" as the "slowest link" in the chain.

What are your system specifications? What you updating to and from what?

Understand Windows 10 - what version(s)

Hard drives, SSD, USB drive...?

More information needed.