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firefox dissappear from my screen for about one second, then it returns on its own. what can cause this inconvenience?

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I'm using windows 7, home premium, 64-bit. it started recently; sometimes while I am on Firefox reading any news or looking some pictures etc. that are in front page (my main page is AOL) all of a sudden the screen goes to my desktop, then it comes back again to the news where I was before it disappeared. Thank you

I'm using windows 7, home premium, 64-bit. it started recently; sometimes while I am on Firefox reading any news or looking some pictures etc. that are in front page (my main page is AOL) all of a sudden the screen goes to my desktop, then it comes back again to the news where I was before it disappeared. Thank you

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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 or otherwise make changes.