Hello anne and welcome to the Forum. I'd suggest going into your control panel > programs and features and see if Adobe Flash is listed. It would look something like this:
Attachment 122601
If it's listed you should be good to go. But double check that you have the latest version (10.1.102.64). If you don't have the latest version, use the Adobe Uninstaller to remove the outdated version before trying to install the latest version.
Uninstall Flash Player | Windows
If you need to install the latest version, don't forget to UNcheck the Google Toolbar if you don't want it to be installed as well.
Adobe - Install a different version of Adobe Flash Player