Fix STATUS_ACPI_ADDRESS_NOT_MAPPED (0XC014000C)

The Short Fix (30 Seconds) — Roll Back the Last Driver or Hardware

This error almost always shows up right after you plug in a new device, install a driver update, or change BIOS settings. The system boots, then crashes with STATUS_ACPI_ADDRESS_NOT_MAPPED (0XC014000C) before you can do anything else.

Here's what you do:

Restart your PC. When you see the spinning dots or the manufacturer logo, hold the power button down hard until it shuts off. Do this three times. On the third restart, Windows should boot into Automatic Repair.
At the blue screen, click Troubleshoot → Advanced options → Startup Settings → Restart.
After the restart, press 4 or F4 to boot into Safe Mode.
Once you're in Safe Mode, right-click the Start button and choose Device Manager.
Look for any device with a yellow exclamation mark. Expand categories like System devices, Display adapters, or Network adapters — those are the usual suspects.
Right-click the problematic device (or the last one you installed), go to Properties → Driver → Roll Back Driver. If the button's grayed out, that driver wasn't updated recently — skip it.
Reboot normally. If the error's gone, you're done. If it comes back, move to the next fix.

Expected outcome: After rolling back, you should boot to your desktop without the BSOD. If not, the driver isn't the root cause.

The Moderate Fix (5 Minutes) — Reset BIOS to Factory Defaults

BIOS updates are notorious for scrambling ACPI tables. Also, if you've tweaked memory timings, overclocked the CPU, or enabled XMP, the ACPI address mapping can get confused. Here's the fix:

Shut down your PC completely. Unplug the power cord (or remove the battery on a laptop).
Open the case. On the motherboard, look for a small circular battery (CR2032). Pop it out with a flathead screwdriver or your fingernail.
Wait 30 seconds. Hold the power button for 10 seconds to drain any residual charge.
Put the battery back in. Close the case. Plug power back in.
Boot up. You'll likely see a message like "BIOS settings reset" or "Press F1 to enter setup." Hit F2 or Del (your motherboard's key) to enter BIOS.
Load Optimized Defaults (usually F9 on most boards). Then save and exit (F10).
Attempt a normal Windows boot.

Expected outcome: If the error was caused by a corrupted BIOS profile, you'll boot clean. If not, the ACPI tables themselves might be corrupted — that's the next step.

The Advanced Fix (15+ Minutes) — Repair System Files and Check ACPI.sys

This error code (0XC014000C) maps to STATUS_ACPI_ADDRESS_NOT_MAPPED, which means Windows tried to translate a physical memory address to a virtual one and failed. That's handled by ACPI.sys — a core system file. If that file is corrupt, you need to repair it.

Step 1: Run SFC and DISM from Safe Mode or Recovery Environment

If you can't boot into Safe Mode, use the Windows Recovery Environment (WinRE) instead:

Boot from your Windows installation USB or recovery drive. Choose Repair your computer → Troubleshoot → Command Prompt.
Type these commands in order, pressing Enter after each:
```
sfc /scannow /offbootdir=C:\ /offwindir=C:\Windows
```
Wait. This takes 5-15 minutes. It'll tell you if it found corrupt files.

Then run:

DISM /Image:C:\Windows /Cleanup-Image /RestoreHealth /Source:C:\Windows\WinSxS

If that fails because the source is also corrupt, you'll need a Windows ISO. Mount it (say as drive D:), then run:

DISM /Image:C:\Windows /Cleanup-Image /RestoreHealth /Source:D:\sources\install.wim /LimitAccess

After SFC and DISM finish, type exit and reboot.

Expected outcome: If ACPI.sys was corrupted, the system file checker replaces it, and you boot normally.

Step 2: Check for Hardware Conflicts

Sometimes the error isn't software at all. It's a hardware address conflict. This happens when two devices try to use the same memory-mapped I/O region. Here's how to check:

Boot into Safe Mode with Networking.
Download BlueScreenView from NirSoft (free, no install).
Open it. Look at the line for the crash. It'll show which driver was on the stack when the error hit. If you see ACPI.sys at the top, but a third-party driver like nvlddmkm.sys (NVIDIA) or rt640x64.sys (Realtek) right below it — that's your culprit.
Uninstall that driver via Device Manager (right-click → Uninstall, check "Delete the driver software for this device").
Reboot. Windows will install a generic driver. If the error goes away, you found the bad driver.

If BlueScreenView shows only ACPI.sys and ntoskrnl.exe, that's a deep system issue — try the BIOS battery removal again, but this time leave it out for 5 minutes. Some boards need that long to clear the ACPI tables fully.

Step 3: Last Resort — In-Place Upgrade

If nothing above works, the ACPI tables in your BIOS might be genuinely broken, or Windows itself is too far gone. You can do an in-place upgrade (keeps your files and apps):

Download the Windows 10 or 11 Media Creation Tool from Microsoft's site (on another PC).
Run it. Choose Upgrade this PC now.
When it asks, select Keep personal files and apps.
Let it run. It reinstalls Windows while keeping your data. Afterwards, the ACPI stack gets rebuilt.

Expected outcome: You get a fresh copy of ACPI.sys and related files without losing anything.

When to Give Up and Replace the Motherboard

I've seen this error on older laptops (pre-2016) where the ACPI controller physically failed. If you've tried all three fixes and the error persists across a clean Windows install (not an upgrade), the motherboard's ACPI controller is toast. Time to replace it — or the whole system.

But 9 times out of 10, one of the steps above kills the error. Start with the driver rollback, then the BIOS reset, then the system file repair. You'll be back in business.