One way to lock a Windows computer from your keyboard is by pressing Ctrl + Alt + Del and then selecting the "Lock" option.

If you've longed for more flexibility than the simple on/off method most input control/tyke-blocker programs offer, Kid-Key-Lock gives you finer control over keyboard and mouse use. Unlike the ...

The problem might be with your keyboard. To verify this, connect another keyboard and observe the results. If the problem disappears, it might mean your keyboard is faulty or that its Caps Lock key ...