Hey there, there's obviously something wrong with your system. What I suggest is putting shutdown -a in your startup file. <drive>:\Documents And Settings\All Users\Start Menu\Programs\Startup
then make a batch file (open notepad, type shutdown -a) then file > Save As > Go and change the bit at the bottom to All files, not (*.txt) then type shutdownabort.bat, place it in your startup folder and the shutdown will be aborted on logon.
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