Create a Shortcut to Lock Your Computer
Leaving your computer in a hurry but you don’t want to log off? You can double-click a shortcut on your desktop to quickly lock the keyboard and display without using CTRL+ALT+DEL or a screensaver.
To create a shortcut on your desktop to lock your computer:
Right-click the desktop.
New and then click Shortcut.
The Create Shortcut Wizard opens. In the text box, type the following:
Enter a name for the shortcut. You can call it "Lock Workstation" or choose any name you like.