Mmmm.. some pests block access to the CP; I guess they think that makes them safer. Dunno.
==Please copy the text between the lines to a notepad [format/wordwrap unchecked] and save as fixkey.reg, as type "all files", to your desktop; dclick it to run... agree; if it opens in notepad instead rclick the icon [file], choose Open with, Registry editor....
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Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
"Start_ShowControlPanel"=dword:00000002
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Say how it goes; your log is clean, just a null entry to fix:
O3 - Toolbar: MSN - {BDAD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Program Files\MSN Apps\MSN Toolbar\01.02.5000.1021\fi\msntb.dll (file missing)