Does Firefox work at all? Or is it that Firefox just won't connect to the internet? Does Firefox launch? If not. do you get any messages on the monitor that are from Firefox? Do you see a ''''firefox.exe''' process running in the Windows Task Manager?

''YTRAMS [[#question-1252273|said]]'' <blockquote> LOST POWER AND . . . </blockquote> Check your system for damage. 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 ----------------- Also, use [https://neosmart.net/wiki/sfc/ sfc – Guide for Windows XP, Vista, 7, 8, 8.1, 10]

Sorry, that should have been; [http://www.tech-faq.com/how-to-scan-disk.html How to Scan Disk]