I have Firefox 36.0.4 and Adobe Flash 17 NPAPI but Flash Player does not appear in my plugins

Thank you in advance for your help.
I have a HP 6910p running Windows Vista Business, and updated Adobe Flash to 17 NPAPI, and Adobe Shockwave Player to 12.1 and I am running Firefox 36.0.4. Adobe Flash is completely missing from my plugins, but it does appear in my program manager. I can not play any video in Firefox at all. If I go to a video site like YouTube the screen freezes then this message appears - "Shockwave Flash may be busy or have stopped responding. You can stop the plugin now, or you can continue to see if the plugin will complete."
I desperately need some help as I refuse to rely on the evil minions at Google by using Chrome which captures your every keystroke.
I have checked and both Adobe Shockwave Player and Adobe Flash are installed correctly.
Does anyone have a solution.

The plugin uses the name "Shockwave Flash" which I do see in your "More System Details" so it must be set to either "Always Activate" or "Ask to Activate".
This is some standard guidance that addresses the most common issues with the Flash Player plugin. I'm sure you've seen some of it before, but just in case:
(1) If you have any recorders/downloaders that interact with Flash media make sure they are as up-to-date as possible, or disable them temporarily.
(2) Disable hardware acceleration in Firefox and in Flash
(A) In Firefox, un-check the box here:
"3-bar" menu button (or Tools menu) > Options > Advanced > General > "Use hardware acceleration when available"
That takes effect the next time you exit and start Firefox up again.
(B) In Flash, right-click the media and choose Settings, then the first mini-tab and uncheck the box to use hardware acceleration. More information in this support article from Adobe: http://helpx.adobe.com/flash-player/kb/video-playback-issues.html#main_Solve_video_playback_issues
(3) Disable protected mode (Windows Vista and higher)
The protected mode feature of the Flash player plugin has security benefits, but seems to have compatibility issues on some systems. You can disable it by creating or editing a settings file. The following pages/posts provide different approaches for that:
* Adobe support article under the heading "Last Resort": [http://forums.adobe.com/message/4468493#TemporaryWorkaround Adobe Forums: How do I troubleshoot Flash Player's protected mode for Firefox?]
* Manual steps: https://support.mozilla.org/questions/968190?page=5#answer-509209
* Batch file to automate the manual steps: https://support.mozilla.org/questions/982093#answer-518078 (alternate version of Carm's batch file with a few changes by me: [https://onedrive.live.com/?cid=f7d304d92388737d&id=F7D304D92388737D!336&ithint=file,.bat&authkey=!AP2FXW2Y_3BXZyo])
Flash needs to completely unload from memory (exiting and starting Firefox up again might help) before this takes effect.
Any improvement?

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