computer translation

Question

what's the correct way to say that something is fixed only via clicking one button, only once. the variants are as follows:

at 1 click of a button
with 1 click of a button
in 1 click of a button
via 1 click of a button 

p.s. i'm not a native speaker of Enlish so it's quite a challenge)

Answer 1

Of these options, I would use with 1 click of a button.

A better phrase would be with the click of a button.

Answer 2

More common: with the click of a button (implies 1 click)

6,890,000 Google results for this phrase.