Those are the common things
Not that long ago I heard something simular...
someone had to install new software on an industrial printer which still works with those floppy discs.
It were 12 discs which you had to insert one after the other...
She said (yes it was a girl and one with a university degree
) it didn't worked.
She wanted to place them all at once into the floppy drive without removing the previous one.
So place them into the opening one after the other so that in the end all 12 would be in it...
offcourse that didn't worked >.<
Also one of my collegues his printer didn't worked. He called a technician who wasn't happy with the call...
The technician made a 2 hour drive to come and look at the problem... The plug was inserted into such a plug box...
but that plug box was not inserted on the electric net >.< hehe