Question Please help with this crash

Aug 1, 2019
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Hey
I’m stressing out a bit rn, I built my own pc some months ago and it started crashing today, managed to film it the third time it crashed.
View: https://youtu.be/j6StUjYLpQM
. The first 2 times it ‘crashed’ I turned it off and back on again but now i just let it sit like this cuz idk what to do. It makes that noise (the monitors) and then it turns off together with the keyboard and mouse, but the pc stays on (power led stays on, cpu/gpu coolers stay spinning).