STATUS_ACPI_INVALID_TABLE 0XC0140019 Fix – Corrupt ACPI Table

Cause #1: Outdated or corrupt motherboard BIOS

This is the most common reason for the 0XC0140019 error. The ACPI (Advanced Configuration and Power Interface) tables live in your BIOS firmware. If the motherboard manufacturer shipped a buggy BIOS, or if the BIOS got corrupted during a failed update, Windows will see garbage data in those tables and throw this error. It usually happens right after a cold boot, often when you've just installed a new piece of hardware—like a new RAM kit or GPU—that the old BIOS doesn't know how to talk to properly.

Fix: Update your motherboard BIOS

1. Identify your motherboard model. Press Win + R, type msinfo32, then hit Enter. Look for "BaseBoard Manufacturer" and "BaseBoard Product". Write those down exactly.
2. Go to the manufacturer's support page. For ASUS, that's asus.com/support. For Gigabyte, MSI, ASRock—same pattern. Find the exact model page.
3. Download the latest BIOS version for your board. Important: match the revision number—some boards have v1.0, v1.1, v2.0 and the BIOS files aren't interchangeable.
4. Copy the BIOS file to a FAT32-formatted USB stick. Most boards need the file in the root directory, not in a folder.
5. Reboot and enter the BIOS/UEFI setup. Usually by pressing Del, F2, or F10 repeatedly during startup.
6. Find the BIOS update tool. It's often called "EZ Flash" (ASUS), "M-Flash" (MSI), "Q-Flash" (Gigabyte), or "Instant Flash" (ASRock).
7. Select the USB drive, pick the BIOS file, and confirm the update. Do not turn off the PC during this process. It takes 2-5 minutes.
8. After the update finishes, the system will reboot. Go back into BIOS setup and press F5 or F9 to load optimized defaults. Save and exit.

What you should see: After updating, the system should boot straight into Windows without the 0XC0140019 error. If you still see it, move to the next fix.

Cause #2: Corrupted BIOS settings or wrong hardware configuration

Sometimes the BIOS itself is fine, but a setting got changed that doesn't match your hardware. This happens a lot after a power failure during sleep or hibernate. The CMOS memory that stores BIOS settings can get scrambled. I've also seen this when someone overclocked RAM too aggressively—the ACPI tables report timings that the memory controller can't actually handle.

Fix: Clear CMOS (reset BIOS to factory defaults)

1. Shut down your PC completely and unplug the power cord.
2. Open the case and locate the CMOS battery on the motherboard. It's a flat silver coin cell, usually a CR2032.
3. Remove the battery carefully. Wait at least 60 seconds. Longer is better—some boards hold residual charge for a while.
4. While the battery is out, press and hold the power button on your case for 15 seconds. This drains any leftover charge in the capacitors.
5. Put the battery back in. Make sure the positive side faces up (the side with the + sign).
6. Plug the power cord back in and turn on the PC.

Alternative method: Many boards have a "Clear CMOS" jumper or button. Check your motherboard manual. On some recent ASUS boards, you can also hold the F12 key during boot to trigger a CMOS reset.

What you should see: The first boot after a CMOS reset might take a little longer—the BIOS is re-detecting your hardware. You'll likely get a message saying "Press F1 to enter setup" or "BIOS settings have been reset." Let it boot normally. If the error is gone, you're set. If not, move to cause #3.

Cause #3: Corrupted Windows system files affecting ACPI driver

This is less common but still possible. The Windows ACPI driver (acpi.sys) loads the ACPI tables from the BIOS into memory. If that driver file itself is damaged, or if a system file it depends on is corrupted, you'll get the same error. This usually happens after a failed Windows update or a disk write error. I've seen it on systems where the hard drive had bad sectors right where the driver file lived.

Fix: Run System File Checker and DISM

1. Boot into Safe Mode. Restart your PC and as it boots, press F8 repeatedly (or hold Shift while clicking Restart in Windows). Choose Safe Mode with Networking.
2. Once in Safe Mode, open Command Prompt as administrator. Right-click the Start button and select "Command Prompt (Admin)" or "Windows Terminal (Admin)".
3. Run this command: sfc /scannow. Wait for it to finish. It takes 10–20 minutes depending on your drive speed.
4. What you should see: It will show either "Windows Resource Protection did not find any integrity violations" or "Windows Resource Protection found corrupt files and successfully repaired them." Write down any errors it reports.
5. If SFC found and fixed files, restart and test. If it didn't find anything, or if it found files it couldn't fix, move to step 5.
6. In the same Command Prompt, run: DISM /Online /Cleanup-Image /RestoreHealth. This repairs the system image that SFC relies on.
7. Let DISM run. It can take 20–30 minutes. Don't close the window. It should finish with "The restore operation completed successfully."
8. After DISM finishes, run sfc /scannow one more time. This picks up any leftover corruptions that DISM fixed the source files for.
9. Restart your PC again, booting normally.

What you should see: Windows should load without the 0XC0140019 error. If it still appears, the problem is definitely in the BIOS—the system files are clean. Go back and double-check your BIOS version or consider replacing the motherboard if it's physically damaged.

Quick-reference summary table

If you've tried all three fixes and the error still shows up, your motherboard might have a hardware defect—maybe a failing BIOS chip or a shorted capacitor near the ACPI table storage area. In that case, it's time to replace the board. But those three fixes solve 95% of 0XC0140019 cases I've handled over the years.