This is the OP again. As I suspected, I ran across the same problem again today. On another Dell (Dimension 4700) also running XP Home. In this case I had already run a Windows Repair (my original solution to this problem) in order to fix other OS issues. But in this case I ran Combofix after the repair install. Once the system was running properly, I ran autofix.exe to repair the autoplay functions. Like the other system, USB flash drives worked fine with autoplay, but CDs & DVDs would open the Autoplay dialogue box, but no matter what program I chose to open them with, nothing would open. I tried all the registry fixes I found involving NoDriveTypeAutoRun in HKLM & HKCU with no luck. I also created a new user to see if it was a user-level problem - and behold ! - it was. All the autoplay funtions worked perfectly in the new user account. So I knew it was a user-level problem, but I still could not find a fix. I even merged HKCU reg entries from the New user to the Old user with no change.
Finially, out of desperation, I ran Autofix.exe again. Even though I had run it already, & the USB drives worked, & the new user worked, Autofix still wanted to repair user-level policies on ALL users & all Drives. After re-repairing these, I booted into safe mode to run autofix in the Administrator account, & found that the user-level policy in autofix needed to be repaired AGAIN, on all accounts & all drives! So I re-re-ran autofix for all drives & all users, and when I rebooted into regular mode, everything WORKED!
So my guess is that something running in normal mode was preventing autofix from making the necessary changes, even though it seemed to have done so successfully, at least until the machine was rebooted. The only other connection is that both machines were running AVG (one the free version & one IS).
*To summerize, I had to run Autofix.exe in safe mode to make the repairs "stick".*
I work at an independent computer repair shop & am working on a customer's Vostro 220s with XP Home (fully updated as of today). After cleaning up malware, spyware, viruses, etc., the autoplay function was not working. I ran Microsoft's Autoplay Repair tool on each applicable drive. Now USB flash drives work fine with Autoplay. My problem is that CDs & DVDs, when inserted, *do* bring up the Autoplay Diaglog box, but no matter what program I choose to open them with, nothing works. For example, if a put in a known good CD, autoplay comes up and asks me what I want to do with it. I select WMP, but nothing happens. Same outcome if I choose iTunes, or PowerDVD for DVDs. I have tried removing Roxio & MusicMatch to no avail. I seems like there is a disconnect between the Autoplay function and the program(s) its trying to call up. If I open the program manually (i.e. WMP or PowerDVD) they will play the discs with no problem. I'm turning to this forum because seaching for the problem via Google is increasingly frustrating, as all the results are either Autoplay not opening at all, or people just wanting to change the default, or turn it off all together. In almost 4 years on the job I have never see anything like this. Any help would be much appreciated.
Vostro 220s; Core 2 Duo 2.8; 4 GB RAM; WD 250; XP Home SP3; AVG Free 2013