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Make sure that the power is off by testing the switch with a voltage tester (or by attempting to turn on the light bulb). When you're sure it's off, you can proceed.
An unresponsive console is a problem, especially when you're on the go. Here's a few solutions if your Nintendo Switch won't turn on.
If a hard reset doesn't work, check out our guide on how to fix a Switch that won't turn on for a few more ideas (using a non-official power adaptor could be the cause, for example).
QUICK ANSWER To fix a Nintendo Switch that won't turn on, make sure the console is charged. If that doesn't help, you may have to perform a hard reset. Press and hold the power button for 20 ...
If your controller still won’t turn on, it may have lost its wireless connection or “sync” with the Switch console. For Joy-Cons, slide them off the console and press the small sync button ...