serial null-modem cable between the RJ45 serial port on the back of the v210/v240/v440 server and your PC laptop COM1 serial port. Set the MS windows Hyperterminal program in your laptop to run to COM1 8 bits 1 stop bit no parity 9600 Bps. start hyperterminal press Enter to get a prompt Logon to the servers ALOM software You may need to read this manual If you have never used ALOM http://docs.sun.com/app/docs/doc/817-1960-10 sc > poweroff ( wait 2-3 minutes until it says it has powered off. ) sc > poweron sc > console Normal machine startup appears . as soon as you see the OBP banner exit the console by typing #. ( Hashmark dot ) Then quickly issue the command. sc > break -y sc > console and you should see the OPB prompt Ok > then do setenv auto-boot? false to prevent autoboot until you have fixed the system by reinstalling or whatever.