I have a Dell running XP and when you turn it on only the backround picture comes up. There is no start button for desktop folders just the picture. I can get to the task manager but do not know where to go from there. I will try to search the forum for this same question with any answers to it but wanted to post incase I don't find any.
Thanks
If you get to the task manager, Click File, then New Task. Type in explorer.exe and hit enter. That will get your start button and taskbar up.
Then go to Start, Run and type regedit.
The value for this key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
Should be shell="explorer.exe"