Table B-4 Numeric Codes and Text Messages (continued)
Control panel message Description Recommended action
512-Chassis, Rear Chassis, or Front Chassis Fan
not Detected
Chassis, rear chassis, or front chassis fan is not
connected or may have malfunctioned.
1. Reseat chassis, rear chassis, or front
chassis fan.
2. Reseat fan cable.
3. Replace chassis, rear chassis, or front
chassis fan.
513-Front Chassis fan not detected Front chassis fan is not connected or may have
malfunctioned.
1. Reseat front chassis fan.
2. Reseat fan cable.
3. Replace front chassis fan.
912-Computer Cover Has Been Removed Since
Last System Startup
Computer cover was removed since last system
startup.
No action required.
921-Device in PCI Express slot failed to initialize There is an incompatibility/problem with this
device and the system or PCI Express Link could
not be retrained to an x1.
Try rebooting the system. If the error reoccurs,
the device may not work with this system
1720-SMART Hard Drive Detects Imminent
Failure
Hard drive is about to fail. (Some hard drives
have a hard drive rmware patch that will x an
erroneous error message.)
1. Determine if hard drive is giving correct
error message. Run the Drive Protection
System test using F2 Diagnostics.
2. Apply hard drive rmware patch
if applicable. (Available at
http://www.hp.com/support.)
3. Back up contents and replace hard drive.
Invalid Electronic Serial Number Electronic serial number is missing. Enter the correct serial number in Computer
Setup.
Network Server Mode Active and No Keyboard
Attached
Keyboard failure while Network Server Mode
enabled.
1. Reconnect keyboard with computer
turned o.
2. Check connector for bent or missing pins.
3. Ensure that none of the keys are
depressed.
4. Replace keyboard.
Parity Check 2 Parity RAM failure. Run Computer Setup and Diagnostic utilities.
POST Numeric Codes and Text Messages 35
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