I can't Uninstall Firefox 4

Hi,
Please help. My OS is Windows 7 Starter, and I have just installed the Firefox 4. Suddenly, for some unknown reasons, I could no longer download things to be played with VLC player. It happens right after I installed Firefox 4. So I was thinking that FF 4 is the culprit,and I have tried to uninstall it from my Control Panel ( coz I do know how) but nothing happens
Please help as I need those downloads badly.

Hi,
I am not getting any error message, nothing at all. Everytime I clicked on Uninstall, nothing happens. Wont load or anything. It's just that when my videos stopped downloading fine, I presume that it's the FF 4's fault.
Thank you for looking into this ^_^

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[email protected]

I found the following on that error message here: http://kb.mozillazine.org/Browser_will_not_start_up#Computer_must_be_restarted_message_after_Firefox_upgrade
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I can't uninstall firefox

I can't uninstall firefox..
If i go to control panel or helper.exe i get this message:
"Your computer must be restarted to complete a previous upgrade from firefox. Do you want to restart now?"
picture: http://img17.imageshack.us/img17/1850/messagebi.png (It's dutch)
Even if i restart my computer then i still get the same message..
And if i want to install the newest firefox i also get that message.
I just want to re-install firefox because i can't upgrade.. So i just want a clean firefox again.

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*(64 bit Windows) "C:\Program Files (x86)\Mozilla Firefox\"
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*http://kb.mozillazine.org/Uninstalling_Firefox

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