as I try to go to msconfig, it will flash on, but then close immed. -- can't get on to modify start up -- also, system folder opens on start up -- any suggestions?

jrh61046: Until you find the source of the problem, this will get you by. LINK Solarian

jrh61046, Update your virus definitions and run a full virus scan as it's evident that your computer has picked up a virus or Trojan. Check out the link below which also references Solarian's link for more info. Why does Task Manager, MSCONFIG, or REGEDIT disappear while opening? Tufenuf

An alternative to MSCONFIG is to remove them from the registry. If you are not sure what the programs are that are starting in the registry, you can rename the .exe in the data section. Unlike, MSCONFIG there is not a check box, you delete the startup link. These run everytime a user logs in: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce These run in background during login prompt: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunServices HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunServicesOnce This one starts when you reboot your machine or add/remove programs: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\ RunOnce\Setup Good luck with finding the cause!