1. Please read through the article, "The AutoRun or AutoPlay Feature Does Not Work (Q330135)."
2. The article [Q310123] lists 33 error codes that may be reported by Device Manager and provides possible resolutions. This [TechNet] article covers up to 49.
I've had two new notebook computers recently, one I returned, and I've had the exact same problem with both. When I uninstall the Norton antivirus trial version it disables the CD-ROM autorun feature. I uninstalled the program through the control panel, did a search and deleted all files and folders left behind. After that, the autorun failed. I rebooted the computer and it still wouldn't work. I did a system restore, uninstalled the program through the control panel and didn't delete the folders left and the autorun feature isn't affected. The problem, if I don't delete all references to the trial version, including the registry entry, the retail version I own, Norton Antivirus 2004, won't install properly. I know some people don't like the autorun feature and disable it but, I happen to be one who likes it and wants it to work properly.
I've been to Norton's web site, done a search for information about autorun and nothing I've found addresses this problem. The instructions to enable autorun found at Microsoft.com and other XP trouble shooting web sites doesn't work. So far, the only thing I've found that works is to do a system restore to a point before uninstalling Norton when the autorun was working. I'm stumped and wonder if anyone has any suggestions besides not using the retail version of Norton 2004. Thanks.

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