How do I stop Fire fox from down loading adds about fat women and up dates

Question

I use Windows 7 the browser Internet Explorer is troublesome with banking programs, so I changed to Fire Fox BUT there are too many add on's, you never know what it is going to do next one minute it giving out security messages, the next it is using popups to advertise weight reduction and trying to get me to up date something to play music .
I don't want all that shite, I remember years ago I used Mozilla but it made such a big deal out of everything I got rid of it, is there a version I could buy just so I don't have to put up with that rubbish of jiggling adds?
I do not want flashy, look at me sort of software, I want soft ware that is a quiet achiever , just do the job and wait till you ask for help then dangle your adds.
I f you can't suggest a remedy then it's going , the way of the DODO never to return .
And I don't want some " piss in your pocket excuse" fix it or delete
And when I do try to change it and ask for support I get answers like "Firefox prevented this site ( support.mozilla.org) from asking you to install software on your computer"
Then when you press ok I get "The add on could not be downloaded because a connection failure on support.mozilla.org"
I have tried the manual steps but there is no Trobleshooting information on this page , there is no help on this page.
I think you guys are on another planet or you smoke too much weed, I fact I might delete it now and not wait for you to come out of the basement with an answer and i see at he bottom you already have educated guesses as to what is wrong, I know what is wrong, "too many add on stuff" you must have a line in the software that goes something like " when in doubt put another pop up in goto line 7 put another popup in.

Answer 1

You can check for recently installed suspicious or unknown extensions.
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes
Do a malware check with several malware scanning programs on the Windows computer.<br>
Please scan with all programs because each program detects different malware.<br>
All these programs have free versions.
Make sure that you update each program to get the latest version of their databases before doing a scan.
*Malwarebytes' Anti-Malware:<br>http://www.malwarebytes.org/mbam.php
*AdwCleaner:<br>http://www.bleepingcomputer.com/download/adwcleaner/<br>http://www.softpedia.com/get/Antivirus/Removal-Tools/AdwCleaner.shtml
*SuperAntispyware:<br>http://www.superantispyware.com/
*Microsoft Safety Scanner:<br>http://www.microsoft.com/security/scanner/en-us/default.aspx
*Windows Defender: Home Page:<br>http://www.microsoft.com/windows/products/winfamily/defender/default.mspx
*Spybot Search & Destroy:<br>http://www.safer-networking.org/en/index.html
*Kasperky Free Security Scan:<br>http://www.kaspersky.com/security-scan
You can also do a check for a rootkit infection with TDSSKiller.
*Anti-rootkit utility TDSSKiller:<br>http://support.kaspersky.com/5350?el=88446
See also:
*"Spyware on Windows": http://kb.mozillazine.org/Popups_not_blocked