You can do this to stop the computer restarting each time and give you time to install the patch.




go to START, CONTROL PANEL,ADMINISTRATIVE TOOLS,COMPONENT SERVICES

then select SERVICES (local) from the left hand window. Find "REMOTE PROCEDUE CALL (RPC)" from the right hand window, right click, porperties. From the RECOVERY tab you can then set it so windows won't reboot each time.