you could try running msconfig (click start / run / then type msconfig and hit return)and doing a selective startup (tick the box) and clearing the startup items, then reboot and then try and shutdown.
if it doesn't work try running msconfig and doing: Click Selective Startup then Clear the "Process Win.ini file" check box andClear the "Process System.ini file" check box.
try these things and see what happens! good luck
ps Windows Minging edition!!! why?!?!?!?!?!