Hello to all, I have a Windows 10 computer and 64-bit Nvidia graphics card GTX 970, with operating system, drivers and firefox all updated. No plugins and add-ons. I have a problem with flash player video with Firefox (no problem with other browsers) classical screen "is a crash occurred in the Adobe Flash plugin" appears. Several forum say try to remove hardware acceleration. In Firefox options I tried to uncheck the hardware acceleration, but then when I check on Flash Player window settings, hardware acceleration check box is always enabled and if I click to remove the tick is not selectable. I also tried it in about: config setting true: gfx.direct2d.disabled layers.acceleration.disabled and then re-initialize the plugins database, reinstalling Flash, but the hardware acceleration check box is always enabled, no chance 'to deselect. Important: If I uninstall Flash, the video works. There 's a way to use flash? Thank you. A. Veneziano