Remove mystart incredibar from mozilla (Reset Firefox)

I am going to teach you " How to remove mystart incredibar from mozilla firefox"
step-by-step process:
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, Open websites, and some Preferences.
 


To Reset Firefox do the following:
  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.
Reset Firefox to its default state :
  1. At the top of the Firefox window, click the Firefox button, go over to the Help sub-menu
    (on Windows XP, click the Help menu at the top of the Firefox window) and select Troubleshooting Information.
    Troubleshooting info - win
  2. Click the Reset Firefox button in the upper-right corner of the Troubleshooting Information page.
    Reset Firefox - Win - 1
  3. To continue, click Reset Firefox in the confirmation window that opens.
  4. Firefox will close and be reset. When it's done, a window will list the information that was imported. Click Finish and Firefox will open. That's it – you're done!