Hi Nettapoo,
Did you update your flash player?
Then, please try to reset your IE settings to troubleshoot this issue.
How to reset Internet Explorer settings
http://support.microsoft.com/kb/923737
Does it help?
Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.