Notepad - Kladblok

When i start Windows 7, i get every time a blanc notepad in my screen.

I've looked in de startup groups but nothing found.

I don't want that.

Can somebody help me?

When you say you "looked in the startup groups", did you mean under msconfig?

If not, and this is a long shot, type 'msconfig' into the Start menu to pull up System Configuration dialog, then select the Startup tab, and see if notepad.exe is listed in there.

It wouldn't even have to be notepad listed. Any file extension that is set up with the default app of notepad would also cause it, so besides notepad, also check msconfig ... startup for any file ending in ".txt"