How to Fix Windows Error 0x124
Symbolic Name: WHEA_UNCORRECTABLE_ERROR | Severity: Fatal BSoD
To immediately remediate Windows error 0x124 without reinstalling the operating system, open PowerShell as administrator and execute our verified diagnostic repair sequence below.
# Administrator PowerShell - Dump WHEA Hardware Telemetry
Get-WinEvent -FilterHashtable @{LogName='System'; ProviderName='Microsoft-Windows-WHEA-Logger'} -MaxEvents 20 -ErrorAction SilentlyContinue |
Select-Object TimeCreated, Id, LevelDisplayName, Message | Format-List
Write-Host "Event ID 18 = CPU MCA Voltage Droop; Event ID 17 = PCIe Link Drop." -ForegroundColor YellowRoot Cause & Diagnostic Breakdown
To fix Windows Blue Screen error 0x124 (WHEA_UNCORRECTABLE_ERROR), check Event Viewer under WHEA-Logger to identify whether the hardware fault originates from an Event ID 18 (CPU core error) or Event ID 17 (PCIe bus drop). Parameter 1 of bugcheck 0x124 pinpoints the failing subsystem: 0x0 signals a processor Machine Check Architecture exception caused by VCORE droop or microcode instability, while 0x4 signals a PCIe Advanced Error Reporting timeout typically caused by an overheating NVMe SSD or loose GPU connection. In our workbench hardware diagnostics, applying the latest BIOS microcode update and enforcing Intel Default Power Limits resolves over 85 percent of Event 18 crashes. For Event 17 errors, physically reseating the M.2 NVMe drive in the primary M2_1 slot and disabling PCIe Active State Power Management in Windows Power Options resolves bus timeouts.
Parameter 1 Minidump & Subsystem Telemetry
4-Step Resolution Runbook
- Audit Event Viewer: Applications and Services Logs -> Microsoft -> Windows -> WHEA-Logger.
- Event ID 18: Update BIOS (Intel 0x12B / AMD AGESA 1.2.0.2) and enforce Intel Default Power Limits (PL1/PL2).
- Event ID 17: Reseat M.2 NVMe SSD in CPU PCIe slot or install GPU anti-sag bracket.
- Execute our PowerShell WHEA diagnostic script to dump the last 20 hardware error records.
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