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I suddenly can't view videos on firefox I don't know why,or what could be preventing me from seeing them.

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It started about a week ago. When I try to watch a video the box that usually shows up and has the controls in it does not form ,and I either get a blank space where it should be ,or a thumbnail picture of the video I am trying to watch. I can watch videos on the other browsers I have on my computer ,just not Firefox.

It started about a week ago. When I try to watch a video the box that usually shows up and has the controls in it does not form ,and I either get a blank space where it should be ,or a thumbnail picture of the video I am trying to watch. I can watch videos on the other browsers I have on my computer ,just not Firefox.

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Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).