I am running McAfee Internet Security Suite, and I connected a USB drive last night. About 95% of the way through scanning it, I cancelled the scan. Since then, the two browsers I use the most, 64-bit IE9 and 32-bit IE9 (default) won't load content on Facebook or Live (Chrome still does); nothing happens when I click on the McAfee icon in the taskbar; when I try to load the interface from the Start menu, I get an empty white rectangle; and when I unsuccessfully attemp to load it, I get a message in the Action Center that my virus protection software isn't running and I can't seem to turn it back on. When I restart my computer, still nothing else works, but the error message does not show up until I try to load the interface again.
Any idea what's going on? Should I try to uninstall and reinstall from the disc?
I think your IE 9 was corrupted which in turn affects the McAfee to get a white screen. Once you fix the IE problem I hope all the issues will be fixed. Please try the following steps and update the same
Note : The above solution will work for Internet Explorer 8 for sure but for Internet Explorer 9 if the above solution does not fix the issue you need to remove the Internet Explorer 9 update from the Computer.
Steps to remove IE 9 update :