Something must be special with both your (networked?) computers.
What is the "dreaded black screen" exactly? And what's the last thing you see happening on the screen before that?
Why are you sure it's not a virus? All your post shows is that it isn't a virus known to Norton.
What I should do:
1. Boot into a Linux Live environment to save the latest files I didn't yet backup.
2. A clean install of the OS, back to factory conditions.
3. Let Windows update redo all updates. There's a VERY good chance it won't crash your machine, because it did nowhere else.
Does anyone know of any prevailing issues with the latest round of windows updates?? Two weeks ago our computer running Windows 7 Premium downloaded an update and received the dreaded black screen on startup. It will now no longer run windows, offer a boot menu or anything. Microsoft is NO HELP at all as it was purchased as OEM operating system on the tower. The manufacturer is really no help either in the matter, for what its worth. Today our older unit running Vista Home Premium did an auto update and we now have the same issue. Sadly with the O/S and with Microsofts "stellar" customer service. I am running Norton with all the current updates and i am sure it is not a virus. Any ideas????