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1) Launch Task Manager (Keyboard Shortcut : Ctrl+Shift+Esc)
2) Go to Processes Tab
3) Make sure you have clicked on "Show processes from all users"
4) Kill "iexplore.exe" process
You may download offline installer for Flash Player from here : Flash Player
Download the following files by right clicking and selecting "Save target as".
Save ALL files to your Downloads folder - DO NOT RUN anything yet.
Reboot your system.
BEFORE opening anything else, go to your Downloads folder and run the UNINSTALLER to remove all instances of Flash Player.
Next, run the ActiveX Installer to replace yoru Flash Player Plugin for IE.
Once everything is installed, see:Enabling Flash Player in Internet Explorer and: ActiveX Filtering in Internet Explorer to make 100% sure that Flash Player is enabled and NOT being blocked by ActiveX controls.