When I open a folder (eg windows explorer), it will open then restart explorer.exe (ie it will close the window, the start menu disappears and then windows flashes up as if it has just logged on).
Sometimes restarting sorts the issue but the problem remains.
Very weird and couldn't pin point anything I have done recently that would have caused it.
FYI my antivirus is prevx3.0 if that helps. ## Heading ##