In our office we have two Windows 7 machines showing the same experience below that has been detected due to the network admission control agent not running (the NAC agent runs using the IE engine):
When IE 8 32-bit is run and a page with an ActiveX control is loaded the prompt to run/install it is displayed.
ActiveX control is able to install fine and then the page will sit.
Testing ActiveX at Link Removed I am able to install the ActiveX, but result in just the yellow box with nothing inside of.
When IE 8 64-bit is run everything works fine, pending that it is a 64-bit ActiveX control.
I have completed a reset of IE as well as removing it through Programs and Features and re-adding it. Both computers have been scanned for malware and had returns that were able to be removed as well as the discovery of suspicious folder located at C:/programdata/ that was just random letters. In both computers, the letters were different for the folder name, but they contained the same number of files and same type of files inside (application files along with activex components). These also did not display until hidden and system files/folders were displayed.
Any suggestions would be appreciated as this prevents our users from launching the NAC agent to be able to log onto our network. Also, the suspicious files have been submitted to our security software vendor, but we are waiting to hear back.