I can not install service pack 1 for Windows 7 from automatic updates. I am trying to install on a clean install of Windows 7. All other updates have been istalled prior to installing Service pack 1. I have tried 3 clean installs but it still wont let me install it. The pc I am having issues with is an Acer M1610 Core2 Duo E4600. The pc had Windows Vista Home Premium before, but I upgraded it to Windows 7 Home Premium. Could someone please help...?