How do I fix my Nintendo Switch?

Ob
- in Nintendo
1

My brother played with my Switch Fortnite. It was just a live event where the community could join. He was logging in, but he took a long time to come in. In the game (playground) it became more serious. The picture became solid and he could not do anything. He tried to turn off the switch but it did not work. About an hour later, the switch turned off. My brother was curious and turned it on again. Now the BlueScreen is like a computer (without text).

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I think there's nothing to save and he has apparently loaded his console very much or rather said apart. So if it still has warranty, it can be exchanged vllt I do not know it so but I would rather do nothing yourself.