Magic SysRQ

this is in german.

Source: https://wiki.ubuntuusers.de/Magic_SysRQ/

Here you can find the english explanation from good ol wikipedia

Source: https://en.wikipedia.org/wiki/Magic_SysRq_key

Depending on your hardware this can vary cause somne hardware vendors do their own thang :)

Hold Alt and Print keep them holdede. Then while still holding Alt and Print press one after another R + E + I + S + U + B here you can find two mnemonis

Raising Elephants Is So Utterly Boring Reboot Even If System Utterly Broken

Not all Magic keys are enabled by default, check out this article for further reading in English

Alt + Print + O shuts your PC/Laptop down. Alt + Print + K can be used as a substitute for donotzap i.e., CTRL+ALT+Backspace

https://linuxconfig.org/how-to-enable-all-sysrq-functions-on-linux