HP Z220 SFF, Z220 CMT, Z420, Z620, and Z820 Workstations Maintenance and Service Guide

Recovering the computer from Boot Block Recovery mode
To recover the computer after it enters Boot Block recovery mode:
1. Remove any media such as USB keys or disks in the optical disk drives.
2. Insert a BIOS image CD into the DVD drive. You can also use USB media such as an HP
DriveKey.
3. Power off, then power on the computer.
If no BIOS image CD or USB media is found, you are prompted to insert one and restart the
computer.
If a setup password has been established, the Caps Lock light illuminates and you are prompted
for the password.
4. Enter the setup password.
If the computer starts from the boot media and successfully reprograms the ROM, three
keyboard lights illuminate and a rising-tone series of beeps signals successful recovery.
5. Remove the boot media and power off the computer.
6. Restart the computer.
Workstation security
This section provides information about providing system security through asset tracking, password
security, hard disk drive locking, and chassis locks.
62 Chapter 2 System management