Tracking cookies are enough to cause issue, as they're technically a form of malware. Try this, download HijackThis! 2.04 from
http://www.filehippo.com/download_hijackthis/ . Install it and right-click on it and click on Run As Administrator.Do a system scan and save a log file. Notepad will open up with the logfile after it runs. Right-click and highlight everything in the logfile by dragging your mouse down the page until all text is blue and right-click again and click copy. Now go to this web adress
http://hijackthis.de/en and right-click below where it says You can paste a logfile in this textbox and click on Analyze. Scroll down the list and look for any red X's. In HijackThis!2.04 put a check mark next to any of the lines that have the red X at that website and click on Fix checked, then restart your pc. HijackThis can remove left over remnants of malware. Also after that open Computer, right-click on C: ,click Properties, Tools, in the top box that says Error Checking click on Check Now, put a check mark next to both items in the window that pops up, click Start and in the next popup box click on something like run at next startup on the left and restart your pc. After your pc restarts click the start button and type cmd in the search box at bottom, right-click on Command Prompt at the top , click Run As Administrator, type in sfc /scannow and hit enter. That last one will search & repair any missing Windows 7 files.
