Hi,

Edit the Registry to remove the space and " after the explorer.exe from
HKLM\Software\Microsoft\WindowsNT\CurrentVersion\Winlogon\shell:explorer.exe
Double-click the value name Shell to edit the value.

That should prevent the My Computer folder from opening during startup.

I just hope that hjt experts will read your hjt log to see if there are malicious software in your system.

I'm assuming that you already ran your updated antivirus and antispyware programs.

I forgot that I am not authorized to respond here.
Sorry!