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Why are my full screen/reduce/exit buttons blacked out (top right of screen) How can I restore?

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  • 2 have this problem
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  • Last reply by cor-el

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I am using a laptop........it was there before, have had to remove then add Firefox for other reasons but am unable to use without this being returned to the screen. I would like to keep using Firefox?

I am using a laptop........it was there before, have had to remove then add Firefox for other reasons but am unable to use without this being returned to the screen. I would like to keep using Firefox?

All Replies (2)

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If you have problems with current Shockwave Flash plugin versions then check this:

  • see if there are updates for your graphics drive drivers

https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration

  • disable protected mode in the Flash plugin (Flash 11.3+ on Windows Vista and later)

https://forums.adobe.com/message/4468493#TemporaryWorkaround

  • disable hardware acceleration in the Flash plugin

https://forums.adobe.com/thread/891337 See also:

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Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.

  • Switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance
  • Do NOT click the Reset button on the Safe Mode start window

If you use a non standard windows theme or made other appearance changes then try to revert those changes and use a (different) standard theme or Windows wallpaper.