Can't uninstall firefox 31.1 on windows 7

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I have tried to uninstall it using the option from the program and features area in control panel as well as from the uninstall folder in the programs file folder. I have ran this both as a regular user and as administrator with no success. I will go through the uninstall process and finish and asks me to reboot my machine. When I do the reboot the program is still their and will not remove.
I am trying to uninstall and re-install Firefox to solve another issue. I keep getting an adobe flash plug in needed when ever accessing a site using flash. I have already installed the latest version of Abode Flash and I have even re-installed it. I kept getting the same error. I do not get this error when I use Chrome or Internet Explorer.
I have also downloaded the latest copy of Firefox and installed it to see if that would correct any corruption and that didn't work either.
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