three fingered salute

three fingered salute is another name for CTRL+ALT+DELETE.

CTRL+ALT+DELETE does...

Windows 3.11 = blue screen prompt to restart.
Windows 9x = Applications-only version of Task Manager.
Windows 2000 = Lock PC screen
Windows XP Home = Task Manager.
Windows XP Pro = Lock PC screen
Windows Vista and 7 = Menu to log off, switch user, lock computer, turn off and Task Manager

Sam: Why this computer with Windows 7 will not unfreeze?
Robert: Try the three fingered salute.