Try these steps, if one does not work, try next:
Method 1. Remove/Uninstall Chrome from 'Add/Remove programs' (Windows xp) or 'Programs and features' (Windows vista and above) in control panel. Download and Install fresh and latest copy of Google chrome.
Method 2. a) Download:
Adobe Flash Player Uninstaller Close all open browsers and run the downloaded file. This will remove the flash player installed on your system.
b) Download and install fresh copy of latest adobe flash Payer using chrome or other browser.
Try above methods one by one, check if problem is fixed after trying each method.
Please post back results.