I run firefox on windows 7 but in most sites I cannot access all the buttons, even to fill in this form I had to use explorer

Question

I always used firefox but cannot use on this computer, in almost all pages there are buttons that I cannot click on, for example to make this request I had to use explorer becasue the line of menus on the top of firefox was not active and I could not click on SUPPORT
and this happens in most sites, it seems that all the buttons outside the main page are disabled or not clickable.
Maybe there is just some setting to enable or disable but I've no idea where to search.
thank you

Answer 1

That may be caused by three issues:
"- You have a theme that is not compatible with your Firefox build."
Go to Firefox, Extensions, Appearance and make sure you use Default style.
'''- You have an extension or theme that is damaging your Firefox installation or your browser's configuration is broken. Reset Firefox feature may help to solve that.'''
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:
#Go to Firefox > Help > Troubleshooting Information.
#Click the "Reset Firefox" button.
#Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
#Firefox will open with all factory defaults applied.
Further information can be found in the [[Reset Firefox – easily fix most problems]] article.
'''- You have a Windows visual style that is not working well with Firefox. Try to switch to Classic style.'''
Switching to Windows Classic style can solve many graphical glitches on Firefox by forcing it to use basic graphics without effects. To try if Firefox works better on Classic mode without changing your visual style, try this:
# Create a Firefox desktop shortcut if you don't have it.
# Right-click it and click on Properties.
# On the Compatibility tab, click on ''Disable visual styles'' check box.
# Click OK and start Firefox.
''You may need to restart Firefox on safe mode so no visual themes are loaded.''
'''The Safe Mode is a troubleshooting mode, which disables most add-ons.''
''(If you're not using it, switch to the Default theme.)''
* You can open the Firefox 4.0+ Safe Mode by holding the '''Shift''' key when you use the Firefox desktop or Start menu shortcut.
* Or use the Help menu item and click on the '''Restart with Add-ons Disabled...''' menu item while Firefox is running.
''Don't select anything right now, just use "Continue in Safe Mode."''
''To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before using the Firefox shortcut (without the Shift key) to open it again.''
'''''If it is good in the Firefox Safe Mode''''', your problem is probably caused by an extension, and you need to figure out which one.
Please follow the [[Troubleshooting extensions and themes]] article for that.
''When you figure out what's causing your issues, please let us know. It might help other users who have the same problem.''