My "lock" icon does not show up. How can I find it?

ahead of my computer had troubles, there has been a “silver or maybe gold” lock around the lower perfect side belonging to the computer.Now it’s not necessarily there.How one can put them back

Did an individual perchance accomplish a System Recovery and also download Firefox SEVERAL.0 afterward For reasons uknown, Mozilla decided to lose the reliability icon within 4.0.Take a look at these a pair of links for further information:

http://support.mozilla.com/en-US/questions/817869s=padlock&as=s

https://support.mozilla.com/en-US/kb/Site%20Identity%20Button

Expectation that facilitates.