How can I get an automatic connection to wifi on startup?

Question

We lost internet connection during snow/ice storm. I have to manually connect to wifi now. How can I get an automatic connection to wifi?

Answer 1

An 'uninterruptible power supply' that automatically steps in and takes your computer
off the grid momentarily, will work in cases of brown-out (under-power) & surge (spike)
and it does so at a fast rate. Most of these also offer a way to customize sensitivity to
a certain degree, depending on model and should there be a valid reason to do so.
An old-school surge protector, even if it has a few fancy LEDs, is no protection. And
for less than a replacement logic board or an hour of authorized Apple repair, the UPS
is a fairly good investment. Backup battery is user-replaceable in the better made units.
Most of them offer extra ports that do not use the battery-backup power feature. If you
need to have more items run when the power switches up/down or out, you'd need to
consider a larger capacity backup power unit. In some instances, the makers of these
(for a time, perhaps even now) did caution users to not install more than one UPS per
room when the same leg may have inadequate grounding, since these can dump the
excess surge power from several different UPS units and overload the ground.
That said, the gamble is yours. I've found to have and use these is some protection
and when away from the computer. Most settings for controlling them appear in OS X.
No additional software is required. Other settings may be on the UPS front panel.
Good luck & happy computing!