Are you sure you don’t have malware?
I have used various virus scan and everything comes out clean even the Microsoft Security Essential. Also went on the C prompt and everything says it is clean. All files are ok. However I have notice that the Window Installer which allows you to download is missing. When I download it says the there is an error in Window Installer. I can surf sites also that does not have adobe flash player because it tells me to upgrade but can’t because it won’t allow me to download.