Lenovo THINKSTATION 4155 - Manual (Page 39)

11. The recovery session will take two to three minutes. During this time you will
hear a series of beeps. After the update session is completed, there will be no
video, the series of beeps will end, and the system will automatically turn off.
Remove the disc from the optical drive.
12. Repeat steps 2 through 5.
13. Replace the Clear CMOS/Recovery jumper to the standard position (pin 1 and
pin 2).
14. Reconnect any cables that were disconnected. Refer to “Completing the parts
replacement” in the ThinkStation Hardware Installation and Replacement Guide.
15. Close the computer cover and reconnect the power cords for the computer
and monitor to electrical outlets.
16. Turn on the computer to restart the operating system.
Chapter 7. Updating system programs 31