150 SYSTEM DIAGNOSTICS AND TROUBLESHOOTING
501–Display Adapter Failure Graphics display controller. 1 Reseat the graphics card (if applicable).
2 Clear CMOS.
3 Verify that the monitor is attached and turned on.
4 Replace the graphics controller.
510–Splash Screen image
corrupted
Splash Screen image has errors. Install latest version of ROMPaq to restore image.
511–CPU, CPUA, or CPUB
Fan not detected
Fan is not connected or might have
malfunctioned.
1 Reseat fan cable.
2 Reseat the fan.
3 Replace the fan.
512–Chassis, rear chassis, or
front chassis fan not detected
Fan is not connected, might have
malfunctioned.
1 Reseat chassis, rear chassis, or front chassis fan
cable.
2 Reseat chassis, rear chassis, or front chassis fan.
3 Replace chassis, rear chassis, or front chassis fan.
515–Power Supply fan not
detected
Power Supply fan not seated properly. Reseat the power supply connector.
601–Diskette Controller Error Diskette controller circuitry or diskette
drive circuitry incorrect.
1 Run Computer Setup (F10 Setup).
2 Check and/or replace cables.
3 Clear CMOS.
4 Replace diskette drive.
5 Replace the system board.
605–Diskette Drive Type Error Mismatch in drive type. 1 Run Computer Setup (F10 Setup).
2 Disconnect any other diskette controller devices (tape
drives).
3 Clear CMOS.
918–Front USB Not
Connected
Front USB is not connected. Connect front USB cable.
920–Fan Command 4 Pin
Connector from Power Supply
Not Connected
The 4-pin fan connector from the
power supply is not connected.
Connect 4-pin fan connector.
921–Device in PCI Express
Slot failed to initialize
PCI Express cards not seated
properly.
Reseat all PCI Express cards in their PCI Express slots. If
the problem persists, contact the PCI Express card
vendor.
1720–SMART Hard Drive
Detect Imminent Failure
Hard drive is about to fail. (Some hard
drives have a firmware patch that will
fix an erroneous error message.)
1 Determine if hard drive is giving correct error
message. Run the Drive Protection System test if
applicable.
2 Apply firmware patch if applicable (visit http://
www.hp.com/support).
3 Back up contents and replace hard drive.
Table 5-18 POST Error Messages (Continued)
Screen Message Probable Cause Recommended Action
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