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Since updating a day ago, Firefox will not open on full screen on Windows 7

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Accessing from taskbar on Windows 7 shows its open but will not open on full screen. And its also affected my Quicken program, doing the same thing. I uninstalled and reinstalled, still same problems. Did the updates affect my computer? And adobe was updated at the same time. I spent two hours w/ Quicken support, problem still exists. The only change that was made to the computer was the Mozilla update.

Accessing from taskbar on Windows 7 shows its open but will not open on full screen. And its also affected my Quicken program, doing the same thing. I uninstalled and reinstalled, still same problems. Did the updates affect my computer? And adobe was updated at the same time. I spent two hours w/ Quicken support, problem still exists. The only change that was made to the computer was the Mozilla update.

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Right-click on the shortcut used to open Firefox and select Properties. If you get a Windows Jump list when you right click, right-click on the Firefox entry in the jump list and select properties.

In the Shortcut tab of the properties dialog box, set the Run option to Maximized, then click OK to save the settings.

You can do this for any program.

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Okay, thanks....I did try that for Quicken, but the window is coming from the right side of the screen in a flash and not staying open. ITs really bizzarre!! I uninstalled Firefox so didn't try that. I think its something within my computer settings...any further help would be much appreciated!!