Issue: Troubleshooting Server Errors
How to read the BEEP codes reported by server on boot.
POST Error Beep Codes
Beeps | Error Message | POST Progress Code | Description |
1 short | USB device action | N/A | Short beep sounded whenever USB device is discovered in POST, or inserted or removed during runtime. |
1 long | Intel® TXT security violation | AE, AF | System halted because Intel® Trusted Execution Technology detected a potential violation of system security. |
3 short | Memory error | Multiple | System halted because a fatal error related to the memory was detected. |
3 long and 1 short | CPU mismatch error | E5, E6 | System halted because a fatal error related to the CPU family/core/cache mismatch was detected. |
2 short | BIOS recovery started | N/A | Recovery boot has been initiated. |
4 short | BIOS recovery failed | N/A | Recovery has failed. This typically happens so quickly after recovery is initiated that it sounds like a 2-4 beep code. |
Integrated BMC beep codes
Code | Associated Sensors | Reason for Beep |
1-5-2-1 | No CPUs installed or first CPU socket is empty. | CPU1 socket is empty, or sockets are populated incorrectly. CPU1 must be populated before CPU2. |
1-5-2-2 | CPU CAT Error (IERR) assertion | CPU encountered an error while initializing. |
1-5-2-3 | CPU ERR2 timeout assertion | CPU Failed to initialize in the specified time for the system. |
1-5-2-4 | MSID mismatch. | MSID mismatch occurs if a processor is installed into a system board that has incompatible power capabilities. |
1-5-2-5 | CPU population error | CPU1 socket is empty, or sockets are populated incorrectly. CPU1 must be populated before CPU2. |
1-5-4-2 | Power fault. | DC power unexpectedly lost (power good dropout) –power unit sensors report power unit failure offset. |
1-5-4-4 | Power control fault (power good assertion timeout). | Power good assertion timeout –power unit sensors report soft power control failure offset. |
1-5-1-2 | VR watchdog timer sensor assertion. | VR controller DC power on sequence was not completed in time. |
1-5-1-4 | Power supply status. | The system does not power on or unexpectedly powers off and a Power Supply Unit (PSU) is present that is an incompatible model with one or more other PSUs in the system. |
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