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remove sliding box that comes out on webpages

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When I open up a webpage, a box slides out on the bottom from the left side. It has a black border, and I can't get rid of it. It's rather large, and covers part of the page. it happens all the time. i want it gone!

When I open up a webpage, a box slides out on the bottom from the left side. It has a black border, and I can't get rid of it. It's rather large, and covers part of the page. it happens all the time. i want it gone!

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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.

Do a malware check with some malware scanning programs on the Windows computer.
Please scan with all programs because each program detects different malware.

Make sure that you update each program to get the latest version of their databases before doing a scan.

You can also do a check for a rootkit infection with TDSSKiller.

See also: