Maytag Bravos 300 is a series of Washers and Dryers, but none specified. 'make model (what it is)' in all questions please. Turn the power off at the breaker for 15 minutes and that will be a type of reset on either washer or dry. Washers sometimes have button combinations to effect a reset.
Google
make (full NUMERICAL model) reset
If that doesn't work, you need a service call. having said that, the washers appear to have a known issue!
https://www.google.com/search?q=Maytag+Bravos+300+will+not+power+up
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