I did what you said and it did not work. I tried it 3 times to no avail.
I spent about 8 hours messing with all kinds of this, even in safe mode. Nothing changed.
While I was looking at things I looked at Windows Update in the Control Panel. I had them set to Download and Notify me when they were available. (I was up-to-date as far as I knew. I downloaded everything that came along).
I changed it to Automatically Download and restarted my computer.
As of right now, all the problems I had seem to have disappeared..
Thanks for the help and i will repost if things change.........