I cannot get my browser to fully update from 3.6 to 7.0; no matter what I do, I get an odd mix of the two browsers' features.

Question

I have tried at least half a dozen times to upgrade my old 3.6 Firefox to 7.0 to no avail. The "About" window says 7.0, but my browser has the same old interface with no tabs and old Menu bar. Also, many sites, like Facebook, remain incompatible with this hybrid "upgrade". I've tried deleting Firefox from my computer before installing the new version - same result. I've tried earlier versions, like 5.0 - same result. I've tried installing the new version into a renamed directory - same result. I have Windows XP, if that matters. I'm out of ideas and need help... or a different browser.

Answer 1

Backup your Profile
* [[Backing up your information]]
-> Restart your System in Safe Mode
* http://windows.microsoft.com/en-US/windows7/Start-your-computer-in-safe-mode
You will need to Reinstall Firefox because your previous Installation did not end properly or it got Corrupted.
-> [[Uninstalling Firefox]] - Completely Uninstall Firefox
* REMOVE USER DATA AND SETTINGS
* Restart your system
-> Check your Hard Disk for Errors
* How to perform Disk Error Checking in Windows XP
* http://support.microsoft.com/kb/315265
* Restart your system
-> Download latest Firefox version from one of these links using some other Web Browser:
* http://www.mozilla.com/en-US/firefox/new/
* http://www.mozilla.com/en-US/firefox/central/
* http://www.mozilla.com/en-US/firefox/fx/
* http://www.mozilla.com/en-US/firefox/all.html
-> [[Installing Firefox on Windows]]
* http://kb.mozillazine.org/Installing_Firefox_on_Windows
Check and tell if its working.
After that, you can Restore your Firefox Profile
* [[Restoring a profile backup]]
Make sure that your [[Firewalls]] and other Security softwares are not interfering with Firefox installation.
* Try Disabling your security softwares in order to make sure that the installation goes uninterrupted.