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DXE Beep Codes
# of Beeps Description
1 Invalid password
4 Some of the Architectural Protocols are not available.
5 No Console Output Devices are found.
5 No Console Input Devices are found.
6 Flash update is failed.
7 Reset protocol is not available.
8 Platform PCI resource requirements cannot be met.
ACPI/ASL Checkpoints
Status Code Description
0x01 System is entering S1 sleep state.
0x02 System is entering S2 sleep state.
0x03 System is entering S3 sleep state.
0x04 System is entering S4 sleep state.
0x05 System is entering S5 sleep state.
0x10 System is waking up from the S1 sleep state.
0x20 System is waking up from the S2 sleep state.
0x30 System is waking up from the S3 sleep state.
0x40 System is waking up from the S4 sleep state.
0xAC System has transitioned into ACPI mode. Interrupt controller is in APIC mode.
0xAA System has transitioned into ACPI mode. Interrupt controller is in APIC mode.