MSI XPower Series Manual page 45

Debug LED Panel
Please refer to the table below to get more information about the Debug LED mes-
sage.
Post Status
FF Power on and first initialize CPU.
C0, C1, C2 Early CPU Initialize.
C4, C6 Initialize chipset.
D4, D5 Initialize memory.
08 Initialize keyboard.
2A, 31 Initialize onboard devices. Load Option ROM (VGA and RAID option
ROM) from BIOS to memory.
37 Displaying sign-on message, CPU information, setup key message
and any OEM specific information.
38 Initialize USB device and different devices.
3C Mid POST initialization of chipset registers. Detect different devices
(parallel ports, serial ports and coprocessor in CPU...etc.)
75, 78 Initialize INT 13 devices and IPL devices. (include SATA/ PATA HDD
and CD/DVD ROM).
87 Enter setup screen. BIOS setup if needed/ requested.
A4 Wait for user input at configuration display if needed.
A7 Display the system configuration screen if enabled.
B1 Save system context for ACPI (Advanced Configuration and Power
Interface).Prepare give control to OS loader (INT 19H).
00 Pass control to OS Loader (typically INT 19H).
AA Enter OS
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