As you are on Windows 7: please make sure that your Windows 7 is up-to-date.
Especially, check for this update: KB2670838 (“Platform Update for Windows 7”):
https://www.microsoft.com/en-us/download/details.aspx?id=36805&ranMID=24542&ranEAID=je6NUbpObpQ&ranSiteID=je6NUbpObpQ-_HtFPsyLvmc0Hc.t_TN3yg&tduid=(f5be1a947f8cc4e970445504dc016a03)(256380)(2459594)(je6NUbpObpQ-_HtFPsyLvmc0Hc.t_TN3yg)()