Hi, any error messages ? Copy your Profile : https://support.mozilla.org/en-US/kb/profiles-where-firefox-stores-user-data and save it. Install over top : Current Release Firefox 59.0.1 with a Full Version Installer *https://www.mozilla.org/firefox/all/ Please let us know if this solved your issue or if need further assistance.

If a computer has a power fail, files on the hard drive could be corrupted. Make sure your system is sound. Perform a System File Check to fix corrupted system files '''Win 7, 8, 10, Vista:''' https://support.microsoft.com/en-us/kb/929833 '''Win XP:''' https://answers.microsoft.com/en-us/windows/forum/all/windows-xp-scan-and-fix-disk-errors/6fe2827a-4be6-4bc1-8083-5139b5aa3a3d Wiki - Windows 10 System File Check http://answers.microsoft.com/en-us/windows/wiki/windows_10-update/system-file-check-sfc-scan-and-repair-system-files/bc609315-da1f-4775-812c-695b60477a93 ----------------------- And reinstall Firefox from; '''[http://www.mozilla.org/en-US/firefox/all/ Download Firefox For All languages And Systems]''' {web link} ------------------- Go to your local department/electronics store and look around for a UPS (Uninterruptible Power Supply) that is useful for you. The lowest price is $50 + -. There are also units on the market that plug into the computer. So if the battery gets low, it will shut down the computer to protect it.