Try ATF Cleaner ATF-Cleaner.exe - www.atribune.org
Click "Main" > check 'select all' this first time using it, then click "Empty Selected". Do the same for FireFox or Opera if you use either of those browsers.
Next, go to Control Panel > Internet Options.
On the General tab under "Temporary Internet Files" Click "Delete Files".
Put a check by "Delete Offline Content" and click OK.