See this - http://www.fixyourbrowser.com/removal-instructions/remove-foxstart-com-homepage/

I tried following the instructions but now have the error message "your firefox profile cannot be loaded. It may be missing or inaccessible".

How do I resolve this issue please?

I have uninstalled firefox and reinstalled but the issue remains.

Hello,

The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information.
Note: This will cause you to lose any Extensions and some Preferences.

• Open websites will not be saved in Firefox versions lower than 25.

To Reset Firefox do the following:

For Firefox versions previous to 29.0:

1. Go to Firefox > Help > Troubleshooting Information.
2. Click the "Reset Firefox" button.
3. Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
4. Firefox will open with all factory defaults applied.

For Firefox 29.0 and above:

1. Click the menu button , click help and select Troubleshooting Information.Now, a new tab containing your troubleshooting information should open.
2. At the top right corner of the page, you should see a button that says "Reset Firefox". Click on it.
3. Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
4. Firefox will open with all factory defaults applied.

Further information can be found in the Refresh Firefox - reset add-ons and settings article.

Did this fix your problems? Please report back to us!

Thank you.

I cannot do as you suggested because firefox does not open now. Attempting to open firefox (even with a fresh installation) gives the error message - "your firefox profile cannot be loaded. It may be missing or inaccessible".

Did you remove the Firefox profile folder?

A likely cause is a problem with the profiles.ini file and the profile marked as Default=1 in this file is no longer present on the hard drive.

• Windows: %AppData%\Mozilla\Firefox\
  C:\Users\<user>\AppData\Roaming\Mozilla\Firefox\Profiles\<profile>\
• Linux: ~/.mozilla/firefox/
• Mac: ~/Library/Application Support/Firefox/

You can use one of these to make Firefox create/use a new default profile:

• Delete the profiles.ini file to force Firefox to create a new default profile
• Use the Profile Manager to create a new profile
• Use "Choose Folder" when you create a new profile to select the location of a lost profile and recover this profile

• http://kb.mozillazine.org/Profile_Manager
• https://support.mozilla.org/kb/Managing+profiles
• http://kb.mozillazine.org/Profile_folder_-_Firefox

Hi Eric277, in case it wasn't clear from cor-el's post, you can jump into your Firefox data by pasting this into the search box on the Start menu:

%AppData%\Mozilla\Firefox\

and pressing Enter. That's where you can start looking for a profiles.ini file and your Profiles subfolder.

Awesome stuff, thank you all for your help.

New profile made and problem solved :-D