It was a long time ago, and before I discovered Windows Lounge. (Reboots may have been unnecessary unless specified.) Everything worked. It kept getting stuck about halfway through its installation. I've read the thread and am a bit lost with the sophisticated methods suggested so far.
Somehow (and I cannot now remember how), I discovered the location of the file that was causing the endless reboot, deleted this, and restarted the Windows Update process, successfully this time. Do not attempt to download all files suggested by Windows update. I won't describe my joy at the next three hours of slogging through knowledge-base articles and various forums from results of a web search on the problem. This problem began long ago so the only time I use system restore is in HP rescue when I have to get out of the "reboot cycle" reboot after attempting to download all suggested updates. Had a similar problem on my Vista install (64-bit) that I ran for three years.
For those who prefer text to video, click the View Transcript link below the video player window or read Greg Shultz's article, "Prevent the automatic delivery of Windows Internet Explorer 9 in Windows 7".
Ryan Gavin, Microsoft’s senior director for Internet Explorer, pointed out several benefits.
And so from now on, Internet Explorer will quietly update itself just as Windows does.
Starting in January, users in Australia and Brazil will be the begin receiving automatic IE updates.
The ability to manage deployment of updates, including Internet Explorer 9, is built in.
Before I get started, I need to clarify my comment about the inadvertent installation on Internet Explorer 9.