Try to disable hardware acceleration. *Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available" ---- Try to toggle some Boolean gfx.font_rendering prefs on the about:config page to disable some features and maybe set gfx.direct2d.disabled -> true to disable Direct2D. Filter: gfx To open the <i>about:config</i> page, type <b>about:config</b> in the location (address) bar and press the "<i>Enter</i>" key, just like you type the url of a website to open a website.<br /> If you see a warning then you can confirm that you want to access that page.<br /> *Use the Filter bar at to top of the about:config page to locate a preference more easily. *Preferences that have been modified show as bold(user set). *Preferences can be reset to the default or changed via the right-click context menu.