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Can't open firefox after upgrading to the latest version. All programmes affected, basically nothing works and it's driving me mad!

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  • 2 have this problem
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  • Last reply by FredMcD

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Having updated firefox, it does not work. After an hour or so to try and open firefox, it says firefox has crashed and gives option to restart or quit. Same with internet explorer and chrome - no response. After about an hour, excel finally opened but so slow to be able to do anything.

Also noticed a message bottom right corner of screen saying this version of windows is not authentic. I have windows 7 and it is legitimate and have not seen this message before.

I have read lots on the internet but nothing seems to match my problem if nothing working. I am unable to change settings or look at set up of any programmes because I cannot get in to them.....

Any ideas would be so gratefully relieved please!!

Thank you in advance,

Having updated firefox, it does not work. After an hour or so to try and open firefox, it says firefox has crashed and gives option to restart or quit. Same with internet explorer and chrome - no response. After about an hour, excel finally opened but so slow to be able to do anything. Also noticed a message bottom right corner of screen saying this version of windows is not authentic. I have windows 7 and it is legitimate and have not seen this message before. I have read lots on the internet but nothing seems to match my problem if nothing working. I am unable to change settings or look at set up of any programmes because I cannot get in to them..... Any ideas would be so gratefully relieved please!! Thank you in advance,

All Replies (3)

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Have you shut down and restarted Windows since this problem began?

I usually avoid the Windows "System Restore" feature because it can cause some data loss (for example, you may lose some bookmarks or other Firefox data), but in this case where the system has limited functionality, it might be worth it.

http://windows.microsoft.com/en-us/windows7/products/features/system-restore

If you can't start system restore from the Start menu, you may need to restart the computer in Safe Mode. See:

http://windows.microsoft.com/en-us/windows/start-system-restore-command-prompt

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Mal-ware is a possibility.

It could be the work of one of your add-ons, or even add / mal-ware. Look thru your add-ons list and make sure you know what each one is and what it does. Also, check the programs that are on your computer

Windows: Start > Control Panel > Uninstall Programs. Mac: Open the "Applications" folder. Linux: Check your user manual.

Go thru the list. If you find something that you don't know what it is, use a web search.

Troubleshoot Firefox Issues Caused By Malware {web link}

Possible Mal-Ware Scan For Macs {web link}

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Start your Computer in safe mode. Then start Firefox. Try Safe web sites.

Starting The Computer In Safe Mode;

If running, turn your computer off. Remove any disks and thumb drives that are in your hard drives or ports. Now start your computer but also;

Windows; Press the <F8> key repeatedly. Mac: Hold down the Shift key. Linux; Using the command line, Linux/Unix computers can be booted into various run levels that determine which resources are loaded. For example, "runlevel 1" is typically the equivalent to Windows and Mac safe modes.

When the Boot menu is displayed, release the key you were pressing. You must now choose what mode to use. The most used are;

  • Safe Mode; The computer runs with only a minimum set of programs.
  • Safe Mode With Networking; Same as above, but with internet access.