Reset Stalled, Non-Responsive Linux system

At times even a Linux box might stall or become non-responsive, not even giving you an option to open a terminal screen. In that case, you can use one of the following 2 options to restart your system.

1. [Riding Shiny Elephants Is Not Utterly Boring]-Method.

Alt-key + PrtSc-key + r

Alt-key + PrtSc-key + s

Alt-key + PrtSc-key + e

Alt-key + PrtSc-key + i

Alt-key + PrtSc-key + n

Alt-key + PrtSc-key + u

Alt-key + PrtSc-key + b

2. [Restart Even If System Utterly Broken]-Method (or reversed "busier")

Hold down  Ctrl-key + Alt-Key + SysRq-key while typing

the following keys slowly: r  e  i  s  u  b

(Note: usually the SysRq-key is same as PrtSc-key)