Trouble downloading/upgrading Flash player

I am experiencing difficulty when I try to download the latest edition of Flash player . I am using Windows 7 and have checked the location it is saving to (program files), and tried uninstalling and reinstalling Flash complete with restarting my computer. It tells me the installation is complete, but each time I attempt to reaccess sites which require Flash I am told to install/upgrade.

How can I make sure Flash installs and runs correctly on my computer?