I am not able to install firefox as it says I need to restart my computer to update an older version

I was cleaning up my laptop b/c it was running too slow and I uninstalled firefox with the plan of reinstalling it after I had gotten rid of everything I wanted to get rid of. Now when I try to reinstall it I am told I have an older version which needs to be updated and I should restart my computer to make that happen. Restarted computer 5 times and have gotten nowhere. I don't believe I have an older version on my computer as I pretty much deleted every single thing I ever downloaded or saved (on the plus side my computer is running much faster). Please help.

If you have problems with updating then easiest is to download the full version and uninstall the currently installed version.
You may need to remove the Firefox program folder to do a clean install of the new version.
* Download a fresh Firefox copy and save the file to the desktop.
* Firefox 4.0.x: http://www.mozilla.com/en-US/firefox/all.html
* Firefox 3.6.x: http://www.mozilla.com/en-US/firefox/all-older.html
* Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer.
* Do not remove personal data if you uninstall the current version.
* It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.
Your bookmarks and other profile data are stored elsewhere in the [http://kb.mozillazine.org/Profile_folder_-_Firefox Firefox Profile Folder] and won't be affected by a reinstall, but make sure that you do not select to remove personal data if you uninstall Firefox.

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firefox will not open. when I try to uninstall it I get a message that says
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Glad it helped, <br>It probably would have been better to get to the root cause of the problem but if it is working again that is the important thing.
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Firefox states I need to restart my computer because of an earlier version, but that does not help

There is a problem with the Firefox I have installed but cannot get it uninstalled. Each time I try to download the complete version, I get a message that says I need to reboot to finish uninstall of previous download. I have rebooted many times, but always receive the same message.

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Hi,
Please try after manually deleting the old Firefox [http://kb.mozillazine.org/Installation_directory Installation directory] (usually '''Computer''' > '''?:\Program Files (x86)\Mozilla Firefox''' or '''?:\Program Files\Mozilla Firefox''') and the [http://kb.mozillazine.org/Profile_folder_-_Firefox Firefox Profile Folder] (usually '''Computer''' > '''?:\Users\?\AppData\Roaming\Mozilla'''
[http://kb.mozillazine.org/Installation_directory Installation Directory]
[http://kb.mozillazine.org/Profile_folder_-_Firefox Firefox Profile Folder]
[https://www.mozilla.org/en-US/firefox/new/ Latest Firefox]

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I am not able to install firefox as it says I need to restart my computer to update an older version

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