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Hello, my Mozilla hasn't work for almost 24 hours now (not responding right after opening it), and it was crashing a lot a few days before that

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For a few months Mozilla was crashing at least once a day, and a few days ago it started going completely out of hand, crashing, closing unexpectedly every now and then. Since yesterday night it hasn't worked at all, i wasn't able to open any singlel web-site. I have Windows 7 on my laptop, updated McAfee (no viruses detected) and fix-it utilities (optimized 100%). I never got crash ID, can't open troubleshooting page as Mozilla wouldn't even open completely.

For a few months Mozilla was crashing at least once a day, and a few days ago it started going completely out of hand, crashing, closing unexpectedly every now and then. Since yesterday night it hasn't worked at all, i wasn't able to open any singlel web-site. I have Windows 7 on my laptop, updated McAfee (no viruses detected) and fix-it utilities (optimized 100%). I never got crash ID, can't open troubleshooting page as Mozilla wouldn't even open completely.

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Try the article Firefox does not work - Common fixes to get you back up and running and let me know if that helps any.

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I tired all of these, and it still doesn't work. Hasn't worked for two days now, i can only open the window and it freezes immediately.

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Can you get your home page?

If you can't even get your home page, I suggest creating a new Firefox profile. In addition to bypassing current add-ons and custom settings, it should have completely fresh settings databases and a fresh cache folder.

First, I recommend backing up your Firefox settings (profile folder) in case something goes wrong. See Backing up your information. In Windows 7, your profile folder is in here:

C:\Users\username\AppData\Roaming\Mozilla\Firefox\Profiles

You can copy that entire Firefox profile folder somewhere outside of the Mozilla folder.

Next, with Firefox closed, start up in the Profile Manager as described in the article Managing profiles. Any time you want to switch profiles, close Firefox and return to this dialog.

If the new profile browses normally, you can migrate key settings like bookmarks from your problem profile to the new one. See Recovering important data from an old profile.

Hope this helps.