Doing a google search I can't find anything related to ST service, for computers.  As this is a new PC, best to call Dell support.

Thanks for the reply. I called and we are currently unresolved on the issue. Yes the pc is two days old. The message was there on the initial start up. I can't repair from the Vista 64 disk that came with the pc either, at the beginning of installation of the Vista disk, I get a "cd/dvd driver not found" message.

One other thought.  In a few cases, systems have come out with a Dell "maintenance" software install instead of the normal system software install.  In those cases it takes a complete reinstall to get rid of the problem.  There should be a Dell Recovery partition on the hard drive that will restore the PC to the factory conditon (and in cases where there was a Dell factory maintenance install this takes care of it).   Since this is new, you may want to seriously consider doing this.  I'm surprised Dell Tech Support hasn't had you do this already.

HERE is the Dell recovery procedure.

Thank you again,

I did the pc restore and the message is still there. It's just odd for a brand new pc to start off with an error message. I will call them again and see what we can work out. I am just as concerned that I can't install another operating system because of the "cd/dvd driver cannot be found" message. I want to use Windows 7 when it is officially released.

One other thing to consider, if you are in the US, Dell has a 21 day, from the date on the Dell invoice (usually the shipping date) to call and request a return authorization if you are not happy with the PC or think you got a lemon.  In many cases they will offer to replace the PC with a new, same type, rather than give you a refund.  Something to consider.  But, after the 21 day return window it's yours to deal with.

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Thank you JC,

The error message no longer comes up. Any chance you've attempted and to install an OS and not been able to because of a message that says "cd/dvd driver not found" at the beginning of the install. That is my last remaining issue. I won't be able to us Windows 7 until I get this resolved.

Thanks again,

ledbetter

I had exactly the same with my inspiron 545, 2 days after receiving it (last week) -    I get the st service error - dll missing. I contacted the techical support???? only answer there was windows restore, back 2 days, to when it came out of the box.

Anyway today 10 days later its back - ive just done as was suggested, later in this tread (Uninstall dell local backup) and its running ok.

Come on dell surely you must be aware of this problem, or is the only fix to uninstall your own faulty software????????

Here's what I did to make the error go away on my new Studio 540 desktop with Vista Home 64-bit:

Download the free version of WinPatrol from BillP Studios (any good startup monitor may work - WinPatrol is the one I happen to use).  Check under Startup Programs for 'launcher.exe' from Softthinks and disable it.

The files causing the problem (Launcher.exe, STService.exe) are located on my PC in the C:\Program Files (x86)\Dell Datasafe Local Backup\Components\Scheduler folder.

Also got this message but it occurred after I ran McAfee Quick Clean and "checked" the registry cleaner,  the cache cleaner, and active x, among others.  This may run automatically so you may not know what has been removed.  System Restore to before I ran the McAfee cleaner restored my computer without this annoying warning reappearing...so far....