Videos in YouTube sometimes stop, which stops all internet activity and requires computer reboot; what's causing this?
In YouTube some videos stop while playing, others when the slider is used to move to a later part. This stops all Internet activity, including email, and requires the computer to be rebooted before further Internet access.
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Sometimes a problem with Firefox may be a result of malware installed on your computer, that you may not be aware of.
You can try these free programs to scan for malware, which work with your existing antivirus software:
- Microsoft Safety Scanner
- MalwareBytes' Anti-Malware
- TDSSKiller - AntiRootkit Utility
- Hitman Pro
- ESET Online Scanner
Microsoft Security Essentials is a good permanent antivirus for Windows 7/Vista/XP if you don't already have one.
Further information can be found in the Troubleshoot Firefox issues caused by malware article.
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Manually uninstalling a plugin
If you can't use an uninstaller program to remove a plugin, you can remove it manually:
Type about:plugins into the Location bar and press Enter to display the About Plugins page. Each entry in the About Plugins page will have "File:" and "Path:", showing the name and location of the plugin file. Use Windows Explorer to navigate to the folder shown for the plugin you want to remove. Rename the file to add an X in front of the filename (for instance, npswf32 becomes Xnpswf32).
The plugin will be removed. Re-initializing the plugins database
In some cases, you may not be able to install or re-install a plugin. Re-initializing the plugins database may fix this problem:
Open your profile folder:
At the top of the Firefox window, click on the Firefox button, go over to the Help menu and select Troubleshooting Information. The Troubleshooting Information tab will open. Under the Application Basics section, click on Show Folder. A window with your profile files will open.
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