HP d240 HP Compaq d240/d248 Series Personal Computer, Service Reference Card - Page 2

Failsafe Boot Block ROM The computer comes with a reprogrammable flash system ROM (read only memory). To upgrade the ROM, you may: a. Order an upgraded ROMPaq diskette from HP. or b. Download the latest ROMPaq images from the HP Web site (www.hp.com) All ROMPaq ROM images from HP are digitally signed to ensure authenticity and minimize potential corruption. Your system ROM includes a Failsafe Boot Block that is protected during the flash process and allows the computer to be restarted in the unlikely event of an unsuccessful ROM flash. If the system detects an invalid system ROM during the boot sequence the system will search for the diskette drive. To recover from the Boot Block recovery mode complete the following steps: Boot Block Recovery 1. Remove any diskettes from the diskette drive and turn off power. 2. Insert a ROMPaq diskette into the diskette drive. 3. Turn on power to the system. 4. The system will automatically flash the ROM, load the BIOS default, and then boot to the operating system. Security Functions The system offers a single supervisor password for system and data protection. The password, if established, protects the computer from unauthorized access by prompting the user for a password during power up. The password, if established, protects the computer from unauthorized or inadvertent re-configuration by prompting the user for a password prior to entering the Setup Utility. Establishing a password: 1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart the computer. 2. When the F10 Setup message appears in the lower-right corner of the screen, press the F10 key. Press Enter to bypass the title screen, if necessary. If you do not press F10 when prompted, a restart will be necessary. 3. Select Password Option, then select Change Supervisor Password and follow the instructions on the screen. You may also want to establish the Password check at this time. This will allow you to specify when the password will be required. 4. Before exiting, click File > Save Changes and Exit. Changing a password: 1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart the Computer. To change the setup password, run Computer Setup. 2. When the key icon appears, type your current password, a slash (/) or alternate de-limiter character, your new password, another slash (/) or alternate delimiter character, and your new password again as shown: current password/new password/new password. NOTE: Type the new password carefully since the actual characters do not appear on the screen. 3. Press the enter key. The new password will take effect the next time the computer is restarted. Deleting a password 1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart the Computer. To delete the setup password, run Computer Setup (F10). 2. When the key icon appears, type your current password followed by a slash (/) or alternate delimiter character as shown. Example: currentpassword/ 3. Press the Enter key. Clearing CMOS Clearing CMOS also clears all passwords. 1. Shut down the system and disconnect the power cord from the power outlet. 2. Remove the chassis access panel. 3. On the system board, press the CMOS button and hold it down for 5 seconds. 4. Replace the chassis access panel and reconnect the power cord. 5. Turn on the computer and allow it to start. Security Features Feature Purpose How It Is Established Removable Media Prevents booting from removable media Boot Control drives. Setup Utilities Serial, Parallel, Prevents data transfer through integrated USB, or Infrared serial, parallel, or USB interface. Interface Control Setup Utilities Supervisor Pass- Prevents use of computer until password is Setup Utilities word entered. Can apply to both initial startup and restart. Supervisor Pass- Prevents reconfiguration of computer until Setup Utilities. word password is entered. Master Boot Record (MBR) Security May prevent unintentional or malicious changes to MBR of the current bootable disk and provides a means of recovering "last known" parameters. Setup Utilities Drive Protection System (DPS Diagnostic tool built into hard drives on select models designed to discover problems that might result in unwarranted drive replacement. Setup Utilities or Diagnostics for Windows. NOTE: For more information about Setup Utilities refer to the Computer Setup Menu on the previous page. Diagnostic Functions Diagnostic functions are provided by the Setup Utility (in system ROM) and by Diagnostics for Windows. Diagnostics for Windows provides detailed system information including: • Processor type and speed • Memory amount, mapping, and integrity • Hardware peripheral availability/settings • Hard drive type, space used/available • System identification, asset tracking Diagnostics for Windows may be pre installed on some models and can be downloaded free of charge from www.hp.com. Error Conditions and Messages Chassis Diagnostic LEDs Power LED Steady green Blinks green @ 0.5 Hz Blinks green @ 0.5 Hz Off (clear) Off (clear) Blinks red 1 times @ 2 Hz * Blinks red 5 times @ 1 Hz * Blinks red 6 times @ 1 Hz * Blinks red 7 times @ 1 Hz * Blinks red 8 times @ 1 Hz* Blinks red 10 times @ 1 Hz* NOTE: * Repeated after 2 second pause Event (S0) System on (normal operation) (S1) Normal Suspend (S3) Suspend to RAM (S4) Suspend to disk (S5) Computer off Processor thermal shutdown Memory not seated / installed Graphics card error System board failure ROM being flashed. Boot Block recovery with embedded video. CPU FAN doesn't work normally. Common POST Error Messages Screen Message Probable Cause Recommended Action Parity Error Fatal memory parity error. System halts after displaying this message. Reseat memory modules. Replace memory modules ... Master/... Slave Hard Disk Error (Primary/Secondary) Master/Slave hard drive could not be initialized by the BIOS. Reseat the device data and power cables. Replace the device data cable. Replace the device. Replace the system board. ...Master/Slave Drive - ATAPI Incompatible Device configured as a (Primary/Secondary) Master/Slave failed an ATAPI compatibility test. Replace the device. Replace the system board. SMART capable but Command Failed. SMART Command Failed BIOS unable to send a SMART message to the device. Backup the data on the hard drive. Replace the hard drive. SMART status Bad, Backup and replace. SMART Capable and Status Bad. SMART capable hard drive detects an imminent failure. Backup the data on the hard drive. Replace the hard drive. DMA-1 Error DMA-2 Error DMA Controller Error Error when initializing the DMA controller. Reconnect the cables on the peripheral device. Replace the data cable. Replace the device. Replace the system board. Checking BIOS could not write to the NVRAM...Update NVRAM block. Failed Change system board jumper JP2 to pins 2-3, then flash the system BIOS. Reset jumpers to 1-2. Replace the system board. NVRAM Ignored or NVRAM Bad NVRAM data used to store plug and play data was not used for system configuration in POST. Restart computer, access Computer Setup. Select Load Default Settings > Save and Exit. Change system board jumper JP2 to pins 2-3, then flash the BIOS. Reset jumpers to 1-2. NVRAM Error detected while Checksum Bad, validating NVRAM data. NVRAM Cleared Restart the computer, use the F10 Key to access Computer Setup, Select Load Default Settings > Save and Exit. Microcode Error BIOS could not find or load CPU microcode to update the CPU. Ensure the system board BIOS supports the processor. Change system board jumper JP2 to pins 2-3, then flash the BIOS. Reset jumpers to 1-2.