ASUS Diagnostics & Fault Manuals
Manufacturer of ASUS systems and diagnostic equipment.
Equipment Models
Hardware families produced by ASUS
Indexed Error Codes for ASUS
Machine-verified error code diagnostic walkthroughs
APU Hardware Kernel Crash
WHEA-Logger Event 18 indicates an unrecoverable Machine Check Exception (MCE) originating from the AMD Ryzen Z1 Extreme APU execution cores. The internal processor hardware monitor detected a bus interconnect timeout, internal parity error, or transient voltage drop across the VDDCR_VDD/VDDCR_SOC rails under high dynamic load transitions.
APU Power Delivery Trip 30W
Hardware-level exception (0x00000124) triggered by transient voltage sag (Vdroop) or current limit tripping on the APU VRM VCORE/VSOC rails during 30W Turbo Boost phase transitions. The system watchdog resets the APU to prevent silicon damage due to power rail instability.
AirTrigger Calibration Loop Failure
The ultrasonic AirTrigger transducer array fails hardware baseline capacitance/impedance checks, causing Armoury Crate to enter an infinite recalibration loop due to corrupted calibration registers or physical sensor flex desynchronization.
DDR5 Memory Not Installed
Q-Code 55 denotes 'Memory not installed', indicating the memory controller (IMC) failed to detect or train DDR5 modules during initial Power-On Self-Test (POST). This typically stems from uneven CPU socket mounting pressure bending LGA1700 pins, marginal memory training timing under aggressive XMP/EXPO profiles on cold boot, or insufficient VDD/VDDQ/MC voltage rail supply.
SD Reader Disappearing Code 43
The Genesys Logic GL9755 SD host controller drops off the PCIe bus or fails descriptor handshakes, triggering Windows Device Manager Code 43 due to PCIe link power state desynchronization (ASPM L1.2 exit latency), thermal de-soldering, or corrupted driver stacks.
MicroSD Reader Code 43 Failure
Windows Device Manager reports Code 43 when the Genesys Logic or Realtek USB/PCIe SD host controller driver reports a hardware descriptor crash, bus enumeration failure, or interrupted power rail (VDD 3.3V) due to thermal stress or component degradation.
MicroSD Controller BSOD Crash
Kernel-mode BSOD (Bugcheck 0xD1) triggered when the Genesys Logic or Realtek SD card reader driver accesses an invalid paged memory address at elevated IRQL during high-throughput I/O burst writes, exacerbated by thermal throttling and unstable PCIe ASPM link states.
I2C HID Controller Failure
Windows Device Manager reports Code 10 (This device cannot start) for the I2C HID Device corresponding to the Embedded Controller (ITE IT8223E/IT8987E MCU interface). The root cause is a communication timeout or corrupted handshake on the SMBus/I2C line interfacing the onboard gamepad controls, macro paddles, and LED lighting with the APU.
Q-Code 55 Memory Not Installed
POST hangs during SEC/PEI phase at Q-Code 55 indicating memory initialization failure. The integrated memory controller (IMC) fails to detect or establish communication with DDR5 modules across the SPI/SMBus or data lanes.
APU Thermal Trip WHEA 18
WHEA Event 18 designates an uncorrectable Machine Check Exception (MCE) generated by the AMD Ryzen Z1 Extreme APU internal hardware monitors. The APU initiates an emergency thermal cut-off (PROCHOT_EXT / THERMTRIP#) when localized silicon junction temperatures exceed the 100°C T_junction limit or severe transient voltage instability occurs under Turbo (30W+) profiles due to cooler mounting pressure loss or phase-change thermal pad displacement.
30W Turbo Black Screen Reboot
Under peak 30W Turbo charging loads (sustained SPL/sPPT/fPPT up to 53W boost), the AMD Ryzen Z1 Extreme APU crosses the 95°C critical junction threshold (TjMax) or causes VRM over-temperature protection (OTP) on the DrMOS power stages, triggering an immediate black screen cut-off and kernel power reboot.
Thermal Shutdown & Wattage Drop
The AMD Ryzen Z1 Extreme APU experienced a thermal runaway or VRM rail droop under boost conditions, triggering hardware PROCHOT and subsequent catastrophic cutoff (ACPI critical trip point or PMIC thermal protection shutdown). Windows registers this unexpected power interruption as Kernel-Power Event ID 41 (Bugcheck 0).
Memory Initialization Detection Failure
Q-Code 55 indicates the motherboard's UEFI BIOS/MRC (Memory Reference Code) failed to detect or train system memory. The Intel Core Ultra (Series 2) LGA 1851 memory controller cannot establish communication with DDR5 DIMM SPD EEPROMs or complete initial bus timing training across primary memory channels.
PCIe Bus WHEA 17 Crash
WHEA-Logger Event 17 indicates a corrected or uncorrected PCI Express root port error originating from the AMD Ryzen Z1 Extreme APU interconnect. Under 25W Turbo load, transient power draw induces VDDCR_SOC or PCIe PHY voltage sag alongside thermal expansion on the M.2/Wi-Fi/SoC bus lines, destabilizing signal integrity and forcing a Windows WHEA_UNCORRECTABLE_ERROR (0x124) crash.
Turbo 30W APU Overtemperature Lockout
The AMD Ryzen Z1 Extreme APU exceeded its critical TjMax threshold of 95°C to 100°C under sustained Turbo 30W profile loading, triggering an emergency hardware THERMTRIP# signal from the Super I/O or Embedded Controller (EC) to isolate power delivery and prevent silicon degradation.