Mixed content situation can happen on HTTPS secure websites such as online stores or financial sites that display images, banners, or scripts that are coming from a server that is not secured. IE has defaulted to prompt user for next course of action when encounter mixed content as displaying mixed content carries risk that non-secure web page or script will be able to access information from the secure content.

Step 1: You can do a clean boot to check if it is caused by any program.

“How to perform Clean Boot” http://support.microsoft.com/kb/929135

Note: Please ensure that the computer is set to start as usual by following the step 7 from the article.

Step 2: You can also turn it off in Internet Explorer and check.

How to Disable and Turn Off Do You Want To View Only the Webpage Content that Was Delivered Securely Security Warning.

a) Launch Internet Explorer.

b) Going to Tools->Internet Options->Security

c) Select the ‘Security’ tab

d) Click the ‘Custom Level’ button

e) In the ‘Miscellaneous’ section change “Display mixed content” to Enable

f) Click on OK. Close internet options.