Not to alarm you, but my machine was doing the same thing. Turns out that it was the circuit board that the exhaust fan, white ribbon cable, and other things connects to. I first pulled my logs, which you can do by following this link
After looking at those, I had some people look into them, and they pointed out that there was an I2C error, which pointed me in the direction of the board. I have a second machine, so I swapped in the board from my second into the broken one and got it to work again like normal. I’m out of warranty so I feel comfortable working with the machine, but I wouldn’t recommend it if you’re under warranty.
I’m not saying that you have the exact same problem as I did, it could be something simple like room temp, or something entirely different than what my specific problem was. I mentioned mine due to your power outage happening, and then the machine getting the error, which means the machine could have underwent a surge, blowing something in the process. Support may ask you to remove the laser head and take pictures of where the cable connects to the head with the gold pins showing, as well as the end of the white cable itself.
Best of luck, I know the frustration involved in having your machine not working, especially when you’ve not done anything wrong.