IBM IntelliStation A Pro 6224, Hardware Maintenance Manual And Troubleshooting Manual

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Recovering from a POST/BIOS update failure
Note: You can download a file to create the POST/BIOS flash CD from
http://www.ibm.com/pc/support/.
If power to the computer is interrupted while POST/BIOS code is being updated
(flash update), the computer might not restart (reboot) correctly. If this happens,
complete the following steps to recover:
1. Read Appendix B, “Safety information,” on page 117 and “Handling
static-sensitive devices” on page 25.
2. Turn off the computer and all attached devices.
3. Disconnect the power cord.
4. Remove the cover and support bracket.
5. Locate the boot block recovery jumper (JP2) on the system board. Figure 4
shows the location of the boot block jumper on the system board.
6. Remove the boot block recovery jumper from pins 1 and 2.
7. Replace any adapters that were removed; then, replace the support bracket
and replace the cover.
8. Connect the computer to a power source, keyboard, monitor, and mouse.
9. Insert the POST/BIOS update (flash) CD into the CD-ROM drive.
Boot block recovery jumper (JP2)
Clear CMOS jumper (JP1)
1 2 3
1 2 3
Recovery
Normal
Reset
Normal
1 2 3
1 2 3
Figure 4. Location of recovery jumpers on system board
Chapter 3. Diagnostics
21