What is Hkey ? is it nessessory for computer operation ?

these are generally displayed when checking by using eyeport registry clean.will i employ ” Correct Errors” to clean them

Those will be registry keys.More air .mess by using registry suggestions for getting started if you don’t understand what you happen to be accomplishing.Messing with these could create your pc grow to be unsound.

Yes it is harmless of course , if a new fluke matter happens it will eventually still be using your laptop and it will see it alone.