Lenovo TD100 User Manual download pdf (Page 221)

Recovering from a BIOS update failure

If power to the server is interrupted while BIOS code is being updated, the server

might not restart correctly or might not display video. If this happens, complete the

following steps to recover:

1. Read the safety information that begins on page vii and “Handling

static-sensitive devices” on page 75.

2. Turn off the server and all attached devices; then, disconnect all power cords

and external cables.

3. Unlock and remove the side cover (see “Removing the side cover” on page

78).

4. Locate the boot block recovery switch 1 on the system board, and remove any

adapters that impede access to the switches (see “Removing an adapter” on

page 81).

DIMM LEDs

SW4 (Boot block/Clear CMOS)

SW3

5. Toggle the boot block recovery switch to On.

6. Replace any adapters that you removed (see “Installing an adapter” on page

82); then, install the side cover (see “Installing the side cover” on page 79).

7. Reconnect all external cables and power cords.

8. Insert the update CD into the CD or DVD drive.

9. Turn on the server and the monitor.

After the update session is completed, remove the CD from the drive and turn

off the server.

10. Disconnect all power cords and external cables.

11. Remove the side cover (see “Removing the side cover” on page 78).

12. Remove any adapters that impede access to the boot block recovery switch

(see “Removing an adapter” on page 81).

13. Toggle the boot block recovery switch to 1.

Chapter 5. Diagnostics 203

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Lenovo TD100 User Manual Page 221