Recently upgraded from Vista using the Windows 7 Home Premium Upgrade (designed for Vista). Since then, my computer displays a blue screen on shutdown. Unfortunately, the screen is not there long enough for me to read it but it appears to do a memory stack dump to the hard drive. The computer then restarts automatically. Also, since the upgrade, it will not install the autoupdates from Microsoft. I now have 44 updates waiting to be installed. Anyone know what the problem is, please?