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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