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.

Further information can be found in the Refresh Firefox - reset add-ons and settings article.

Did this fix your problems? Please report back to us!

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

• Do NOT click the Reset button on the Safe mode start window or otherwise make changes.

• https://support.mozilla.org/kb/Safe+Mode
• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

As of this morning, PACER still will not work, clicking the Run Query button on the Query page does nothing, But Chrome and IE work fine.

But then.....

I clicked on Reset Firefox on the Troubleshooting Information page, and it now works.

So what do I have to do to get the extensions back?

You can go to addons.mozilla.org to install extensions.

I found a folder that the reset created on my Desktop called OldFireFoxData that seems to have reference to my last extensions, that helped.

Also I clicked on More system Details, and there is a list of my old plug-ins.