HP t505 Troubleshooting Guide t505 Flexible Thin Client - Page 34

Beep Codes If there are no video errors, the system goes directly to POST messages. Beep Code 1 long, 2 short 1 long, 3 short 2 long, 2 short 2 long, 3 short Description A video error has occurred and the BIOS cannot initialize the video screen to display any additional information. System running in boot block recovery mode. No memory detected. Unsupported SODIMM installed. POST Error Messages Table 4-3 POST Error Messages POST Error Message BIOS ROM checksum error - System halted CMOS battery failed CMOS checksum error - Defaults loaded CPU at nnnn Press ESC to skip memory test Hard Disk Install Failure Keyboard error or no keyboard present Memory Test Memory Test Fail Override enabled - Defaults loaded Press TAB to show POST screen Error: Non-System disk or disk error Description The checksum of the BIOS code in the BIOS chip is incorrect, indicating the BIOS code may have become corrupt. To restore a corrupt BIOS, refer to System BIOS on page 60 or call your local HP Call Center for a diagnosis. For phone numbers of an HP Call Center near you, visit the following Web site: http://www.hp.com/cgi-bin/hpsupport/index.pl The CMOS battery is no longer functional. For information on replacing the battery, refer to Removing and Replacing the Battery on page 10. Checksum of CMOS is incorrect, so the system loads the default equipment configuration. A checksum error may indicate that CMOS has become corrupt. A weak battery may have caused this error. Replace the battery if necessary. For more information, refer to Removing and Replacing the Battery on page 10. Displays the running speed of the CPU. The user may press Esc to skip the full memory test. Cannot find or initialize the hard drive controller or the drive. Make sure the controller is installed correctly. If no hard drives are installed, be sure the Hard Drive selection in Setup is set to NONE. Cannot initialize the keyboard. Make sure the keyboard is attached correctly and no keys are pressed during POST. To purposely configure the system without a keyboard, set the error halt condition in Setup to HALT ON ALL, BUT KEYBOARD. The BIOS then ignores the missing keyboard during POST. This message displays during a full memory test, counting down the memory areas being tested. If POST detects an error during memory testing, additional information appears giving specifics about the type and location of the memory error. If the system cannot boot using the current CMOS configuration, the BIOS can override the current configuration with a set of BIOS defaults designed for the most stable, minimal performance system operations. Press the Tab key during POST to display messages hidden by the HP logo. The BIOS was unable to find a suitable boot device. For the t5000 Series, this may mean an uninitialized or corrupt ATA Flash. Reflash the unit. For more information, refer to Restoring the Flash Image on page 49. 28 Chapter 4 Diagnostics and Troubleshooting