Serious or power loss. Not just a computer either. 
If they did loose power and fridge, tv could be a nightmare.
Dont loose much. All mine is underground. Even a planned shut down have
set up where i get a call. Write down the time of loss, and date.
Document it. Freezer full of food they payed me. 
Ive always unplugged or kicked a breaker with appliance during power
back in. A surge could be and would be a nightmare. Highvoltage is another. 
Have a reactor in the backyard though. this lags the current on the primary. 
Yes......thats good.