Windows 10 已于2025年10月14日停止支持。如果您正在使用 Windows 10,参见 这篇文章

Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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The drop-down menus disappear when I try to access them

cor-el 已回复
ekeeley

When I select a drop-down (i.e. address box) it fades out and becomes unreadable. As I move down, it momentarily comes back, then fades out again.

When I select a drop-down (i.e. address box) it fades out and becomes unreadable. As I move down, it momentarily comes back, then fades out again.

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Start Firefox in Use Troubleshoot Mode in Firefox to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).

In Firefox 4 you can use one of these to start in Safe mode:

  • Help > Restart with Add-ons Disabled
  • Hold down the Shift key while double clicking the Firefox desktop shortcut (Windows)

In Firefox 4 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.