When I click on a drop down, eg tools, the menu flickers and is not readable. Windows 7 environment
When I click on any item in the menu, the drop down box flickers and is unreadable. Windows 7 environment. I disabled all add-ons with no improvement in performance.
When I click on any item in the menu, the drop down box flickers and is unreadable. Windows 7 environment. I disabled all add-ons with no improvement in performance.
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Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
- Don't make any changes on the Safe mode start window.
- https://support.mozilla.com/kb/Safe+Mode
In Firefox 4 and later Safe mode disables extensions and disables hardware acceleration.
- Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available"
If disabling hardware acceleration works then check if there is an update available for your graphics display driver.