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Why does Firefox constantly lock up ?

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My computer does not lock up. Chrome works fine. Firefox always locks up after a few minutes. No matter what web page I am on. A few minutes and it stops, is clocking, and the screen goes white.

My computer does not lock up. Chrome works fine. Firefox always locks up after a few minutes. No matter what web page I am on. A few minutes and it stops, is clocking, and the screen goes white.
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Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen) to see if that helps.


Do a clean reinstall and delete the Firefox program folder before (re)installing a fresh copy of the current Firefox release.

If possible uninstall your current Firefox version to cleanup the Windows registry and settings in security software.

  • Do NOT remove "personal data" when you uninstall your current Firefox version, because this will remove all profile folders and you lose personal data like bookmarks and passwords including data in profiles created by other Firefox versions.

Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.

  • (32 bit Windows) "C:\Program Files\Mozilla Firefox\"
  • (64 bit Windows) "C:\Program Files (x86)\Mozilla Firefox\"

Your personal data like bookmarks is stored in the Firefox profile folder, so you won't lose personal data when you uninstall and (re)install or update Firefox, but make sure NOT to remove personal data when you uninstall Firefox as that will remove all Firefox profile folders and you lose your personal data.

If you keep having problems then create a new profile.