Solution 1: Check whether or not Shockwave Flash is disabled
In Google Chrome, click on the Tools menu and select Extensions. Find the Shockwave Flash plugin in the list of installed Extensions and select Options. Ensure that you have selected Always Activate on Start, Allow scripting of Flash Player and Enable all Add-ons as enabled items. If they are not, click on the (x) icon to remove it then select Add to return back to options.
Solution 2: Check whether or not Shockwave Flash is blocked
In Google Chrome, click on the Tools menu and select Settings. Under Privacy, tick the Send a “Do Not Track” request with your browsing traffic box, this will help Google Chrome to send a message to websites requesting these sites not conduct tracking activities. By default, Google Chrome is set to block or allow flash and other plug-ins, so you need to uncheck the Block websites from running Flash (or other plug-ins) box.