How can I quickly lock the screen on a Win8 computer? (680Z5E series)

Method 1:

1. In desktop mode, press WIN + L on the keyboard.

 
 

 
2. The computer screen is locked, as shown in the figure below:

 
Method 2:

1. On the Metro interface, click the user account in the upper-right corner of the screen, as shown in the figure below:

 
2. Select Lock ].

 

3. The computer can also be locked, as shown in the figure below: