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How do I remove the white box on the top left corner of my Mac computer?

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  • Last reply by cor-el

dturbes
dturbes
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I keep getting a white box on the top left corner of my computer. It doesn't come up right away but when I what to restore previous session it comes up. This has just reoccurred lately I had this problem before and it stopped for awhile but now its back. My Mac version is 10.6.8

I keep getting a white box on the top left corner of my computer. It doesn't come up right away but when I what to restore previous session it comes up. This has just reoccurred lately I had this problem before and it stopped for awhile but now its back. My Mac version is 10.6.8

All Replies (1)

cor-el
cor-el
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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.

Try to disable hardware acceleration in Firefox.