Eh?
Unlike yourself, I haven't a bloody clue on these things
Would it help if I just said it louder?
CLEAR YOUR BROWSER CACHE LIKE!
Go into the Firefox menu, Click Options, Privacy and clear your recent history....
I did that, it didn't solve the problem. However, shut the laptop down, unplugged it, blew on the three pins, restarted, it went into "Start-up repair" mode, problem solved. Must have been the blowing on the pins that did it
Now it's running again, I'm gonna run Spybot, Malwarebytes and defrag it, I shall wear a mask in case there's any viruses like