This is a cool trick to make the three small LEDs on your keyboard flash in a cool and rhythmic manner.

Open Notepad and paste the following on to it.

Set wshShell =wscript.CreateObject(“WScript.Shell”)
do
wscript.sleep 100
wshshell.sendkeys “{CAPSLOCK}”
wshshell.sendkeys “{NUMLOCK}”
wshshell.sendkeys “{SCROLLLOCK}”
loop

Now save the file using the Save As option as CoolLights.vbs (anyname with an extension of vbs will work).  While saving do make sure that you select the "All Files" from the "Save As type"  in the save dialog box.

To stop the lights blinking in loop.   Press Ctrl + Alt + Del to bring in the Task Manager.  Go to processes, select wscript.exe and click on End Process.