Error message: 901-Chassie Fan Not Detected (Rear)

[Mike-Lynch]

HP Elite Desk 800 G4.

CPU upgraded to an 8700K.

Then the Error Message.

Is the Chassie Fan tied to the CPU Upgrade?

If so, can one be added to my System?

ALSO

What might it's Part Number be?

Best regards,

Mike Lynch

[M_Salman]

Hi @Mike-Lynch,

If you have upgraded your HP EliteDesk 800 G4 with an Intel Core i7 8700K processor and started receiving an error message related to the chassis fan, here's a detailed guide on what you can do:

Error Message Explanation

The error message you're seeing could be due to the system detecting a missing or malfunctioning fan. When upgrading to a new CPU, especially one that has a higher power requirement like the 8700K, you might need additional cooling.

Steps to Address the Chassis Fan Issue

1. Check Current Fan Setup:
2. Open the computer's case and inspect the existing fans. Make sure they are properly connected to the motherboard.

3. Check if the CPU fan is functioning correctly, as sometimes CPU upgrades might require more effective cooling solutions.

4. Install Additional Chassis Fans:

5. If the error points to a lack of chassis fans or malfunctions, consider installing additional fans. These offer better airflow and cooling for your system.

6. Fan Compatibility:

7. Ensure the fan you add is compatible with the EliteDesk 800 G4 chassis and motherboard connections.

8. Fans typically connect via 3-pin or 4-pin connectors, so ensure your motherboard supports the type you are purchasing.

9. Part Number for Fans:

10. Specific fan part numbers can vary depending on the configuration and where you purchase them. Check HP’s parts and accessories website or contact HP support for the exact part number.

11. HP uses standard fan sizes, so you can also compare the existing ones for required specifications such as size and pin connection.

12. BIOS Update:

13. After hardware changes, ensure the system BIOS is up-to-date. This could correct any compatibility issues or error messages with the new configuration.