HOw to get rid of black smears on websites?
All Websites, Microsoft Excel and Word on computer screen have black smear/smudges.
All Websites, Microsoft Excel and Word on computer screen have black smear/smudges.
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Uninstalle Firefox and re-installe. (Sorry for bad english, im french)
See if there are updates for your graphics drivers https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration
Do Word and Excel develop smudges even if you do not use Firefox, or do they appear to be "left behind" on the screen by Firefox and then appear in those positions regardless of which application you're using?