Clean install of Windows XP Pro SP2 (2600), + all updates.
I installed LogonStudio, loaded and applied the most amazing .logonxp file (more on that later), then rebooted only to find no more shutdown/welcome screen, just the ugly classick login box as if you had disabled the welcome screen.
Now I've done this before on a customer's machine and it worked perfectly, same OS, so I researched the googleverse and found little to help, but my passion for this particular logon screen drove me forward. I've had this exact same issue on another machine before and just gave up on it, not this time.
I compared the registry against another system, entries under:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
As expected I found only a difference in the longonui file name (duh) as LogonStudio uses logonuiX.exe instead. So I tried many things, uninstalling, reinstalling, creating another user, uncheck apply, recheck apply the "use welcome screen", et cetera to the third power, several hours worth anyway, to no avail. Even uninstalling LogonStudio failed to give me back my welcome screen. But I did discover I could edit the UIHost name back to logonui.exe and get my original welcome screen back, fully functional.
So that gave me the idea to have a try at importing the logonuiX.exe file from the Ghost I made of the customers machine where LogonStudio was working. With LogonStudio still in the dust bin, I then disable the protection on the file: Set the decimal value of SfcDisable to 1. Then restarted the computer, renamed the logonui.exe (found in the system32 dir) to xxlogonui.exe, copied the working logonuiX.exe in, changing it's name to logonui.exe. Immediately XP screamed hell no! Unrecognized file. I just replied, FU, cancel. The file sizes between the two logonuiX.exe files, both created by LogonStudio, were slightly different, 6,201,856 for the file that worked, and 6,246,912 for the one that didn't (I can upload them somewhere if anyone is interested in doing some forensic analysis).
The result is: it works now, and that with LogonStudio still uninstalled. I found myself pumping my fists! YAY!
And here's why: google for "RAVEL by ~007TINAR" and find yourself with the worlds most astounding LogonXP screen.