Why is my steamdeck OS shutting down?

I've had a recent problem with my steamdeck, every time I turn it on within about 30 seconds the screen turns black and I have to hold the power button to restart it, if I'm quick enough to click into a game I can play it for as long as I like but I can't turn the volume up or use the steam home button (that's why I believe it's the OS) I can't go into the settings in time to reset it or update the hardware, is there any way I can fix this?