This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

When I click the arrow for a drop down menu, it flashes on and back off. I cannot get the drop down menus to appear so I can use them.

  • 2 replies
  • 10 have this problem
  • 2 views
  • Last reply by memcda02

bobbil
bobbil
more options

All drop down menus are having this problem. The menu will appear and rapidly turn back off. Just a flicker. I cannot make a choice on any menu because it doesn't stay on.

All drop down menus are having this problem. The menu will appear and rapidly turn back off. Just a flicker. I cannot make a choice on any menu because it doesn't stay on.

All Replies (2)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
See Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems and Troubleshoot issues with plugins like Flash or Java to fix common Firefox problems

If it does work in Safe-mode then disable all your extensions and then try to find which is causing it by enabling one at a time until the problem reappears.
You can use "Disable all add-ons" on the Safe mode start window to disable all extensions.
You have to close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")

memcda02
memcda02
more options

Here's the fix:

Eric714 posted this solution: Running Windows 7 64-bit and drop down menus in Firefox 4.0 disappear. Fix this by disable hardware acceleration in Firefix.

Tools -> Options -> Advanced -> General -> Browsing: Disable “Use hardware acceleration when available”

Credit goes to Daniel here: http://headadmin.net/?p=323&cpage=1#comment-9026

Note: Wish Mozilla could group all the questions related to this issue together so easier to see causes/solutions.