Read this article :- https://support.mozilla.org/en-US/kb/How%20to%20set%20the%20home%20page?

This may help you . Let us know if this work .

i know how to get it back but i would lke to know if there is a way to keep it from getting changed? i know i can go the options and general and reset the home page thanks

Tools-->Option-->write www.yahoo.com at the place of "Home Page" .

don't you think i have done that already

You could put that home page setting in a user.js file and see if that makes it stay put. The setting is

• browser.startup.homepage

This page explains about user.js files.

• http://kb.mozillazine.org/User.js_file

Actually, it would not hurt to see if there is already a user.js file in the profile.

i did that it did not help and then that file kept duplacating itself. i went back to that directory and every time i opened fire fox it made a new entry. i did not want that duplicated hundreds of times or i undid the change and now i don't get the duplications. thanks

before i had to reformat my hard drive i had either a plugin or addon that made the home page lock into place. but now i can't find that plugin or addon. anyone happen to know what that was? thanks

To what page does the home page get changed?

You can do a malware check with several malware scanning programs on the Windows computer.
Please scan with all programs because each program detects different malware.
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:
  http://www.malwarebytes.org/mbam.php
• AdwCleaner:
  http://www.bleepingcomputer.com/download/adwcleaner/
  http://www.softpedia.com/get/Antivirus/Removal-Tools/AdwCleaner.shtml
• SuperAntispyware:
  http://www.superantispyware.com/
• Microsoft Safety Scanner:
  http://www.microsoft.com/security/scanner/en-us/default.aspx
• Windows Defender:
  http://windows.microsoft.com/en-us/windows/using-defender
• Spybot Search & Destroy:
  http://www.safer-networking.org/en/index.html
• Kasperky Free Security Scan:
  http://www.kaspersky.com/security-scan

You can also do a check for a rootkit infection with TDSSKiller.

• Anti-rootkit utility TDSSKiller:
  http://support.kaspersky.com/5350?el=88446

See also:

• "Spyware on Windows": http://kb.mozillazine.org/Popups_not_blocked