Thanks N1K, but I think you may have misunderstood me. I don't need any more ad removal programs (I have adaware, etc). The problem concerns the automatic inclusion of the Windows malicious software removal tool with Internet Explorer 7. I know that it is the removal tool that's causing the hard drive to shut down and re-start, because when it first came out as a separate Windows update the same thing occurred. I would like IE7 but can't seem to find it without the removal tool included.