When I play videos (e.g. YouTube) the videos freeze. Have tried Safe Mode and resetting Firefox. Does not happen with Internet Explorer.
I have disabled hardware acceleration. Note that the video freezes, but the computer has not locked up; only FF is impacted. If I open Task Manager and click End Task, the video resumes and will finish playing as long as I leave the Confirm Close dialog box open, but when the video ends I cannot return to normal FF operation and have to use Task Manager to shut down FF. Hardware is an HP 6730b business notebook running Win7 Home Premium 64 bit, SP1, 4 GB RAM. The issue is not limited to YouTube videos.
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I would try uninstalling and reinstalling firefox and also checking out your flash settings. It sounds like it could be flash
Try to disable hardware acceleration in Firefox.
- Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available"
- https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes
You can check for problems with current Flash plugin versions and try these:
- disable a possible RealPlayer Browser Record Plugin extension for Firefox and update the RealPlayer if installed
- disable protected mode in the Flash plugin (Flash 11.3+ on Windows Vista and later)
- disable hardware acceleration in the Flash plugin