Hi friends! this is my new trick to lock computer. First Right click on an empty area of the desktop and choose New then Shortcut
The create shortcut wizard will open. In the first text box, type
%windir%\\System32\\rundll32.exe user32.dll,LockWorkStation
and then give your shortcut an appropriate name on the next page, and hit ‘ finish .’
You will notice that the shortcut you created has a blank icon. To select a more appropriate one, right click on the shortcut and hit
‘properties .’ In the ‘shortcut’ tab, click the ‘change icon ‘ button. Else u can simply press the Window key + L to lock your computer.