Most modern Android phones can be rebooted via a menu in the Quick Settings pull-down. If not, a power and volume button ...
Use these fixes if your Windows PC is stuck in a boot loop after a BIOS update. Before proceeding, disconnect all peripherals and check if your PC boots into Windows. Press and hold the power button ...
Restarting your iPhone is usually straightforward, but it gets a bit trickier if you don't have a working power button.