Macbook Air Appears Dead

Hello! I went to bed the other night with around 75% charge still on my MacBook Air (mid 2013, 13”), power adapter not plugged in. Next morning, nothing. No sounds, fan, lights, and not even a light (orange or green) on the power adapter plug when fitted into the slot. I’d had zero issues up until then. Something just seems to have died overnight. I’ve tried all of the button sequences recommended by Apple, but this definitely feels like a hardware issue. I’m just trying to figure out which piece of hardware. Thanks, in advance, for your help!