Startup tasks may be located in many places in Microsoft Windows 7. Some of the places to look for programs being started are:
Startup folder
run MSCONFIG and look in the startup tab
run REGEDIT and look under keys: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run & RunOnce HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run & RunOnce