Cannot upgrade Flash Player from 11.8.800.94 to 11.8.800.174

[Cory9876]

I have Flash Player 11.8.800.64 on Windows 8 on my laptop.  I want to upgrade to 11.8.800.174 but I cannot because when I try to a screen comes up saying it is unnecessary to install. 

I cannot watch videos because the screen is always green.  Everyone is telling me to adjust the video settings but I cannot.  THERE ARE NO VIDEO SETTINGS AVAILABLE WHEN I RIGHT CLICK.  The only settings are Privacy, Local Storage, Microphone, and Camera.  I don't know why.  In all the help videos there is another option for video but it does not exist for me when I right click.  Frustrating.

Also, I am in Desktop mode, not Modern mode.  I watched that unhelpful video three times.

I used to be able to watch videos fine but now I cannot watch any at all and nothing has changed.  Strange. 

I want to upgrade but cannot.  Mainly I just want to watch videos without the green screen. 

[pwillener]

Flash Player on Windows 8 is updated by Windows Update.

Regarding "green" screen; that usually indicates an outdated graphics driver; see http://forums.adobe.com/thread/945765