Hopefully, you'll find some resolution at the forum. If not, you have the below 3 options available to you:
Best of luck..
I just installed sp2 yesterday only to forget that there was a third service pack. Started the install today and it still going over 2 or 3 hours later. It appears to be stuck on the stage of "running processes after install". I have gone all over the internet looking for a proper answer to what I should do.
The computer is not an AMD based computer and I have met the requirements for Symantec for Norton not to interfere. It is still on the same stage as I am typing this.
I have terminated a few processes that are not needed at the moment. e.g. Google Toolbar something something, iTunes Helper and iPod service with still no luck. I feel the solution is to end a certain process somewhere but have no idea which one. The cancel button is also grayed out and I am updating through windows update.
P.S. The computer is not completely frozen. I can still open other windows and move the mouse.
I could really do with some answers really soon.