Simple Way to Lock Your Computer
Simple way to lock a Windows computer
You can create a desktop shortcut that will lock your computer when you double-click it:1. Right-click the desktop and select New, then Shortcut. This will open the Create Shortcut Wizard. 2. For the location of the item, type the following:
windir\System32\rundll32.exe user32.dll,LockWorkStation3. Click Next. 4. Type an appropriate name for this shortcut and click Finish.
You will now have a shortcut on your desktop that will lock your computer when you double-click it.
Another option is to use the keyboard combination: Winkey-L
If your keyboard does not have Windows keys, Ctrl-Alt-Del and then Enter (or space) also works for the Windows NT family (NT, 2000, XP, 2003).