Fix STATUS_ACPI_RS_ACCESS (0XC0140018) on Windows 10/11

Quick answer

Disable fast startup in Windows, then update your chipset drivers. If that fails, reset your BIOS to defaults.

What is this error and why does it happen?

I know this error is infuriating. You're sitting down to work, hit the power button, and instead of the login screen you get a blue screen with STATUS_ACPI_RS_ACCESS and the code 0XC0140018. Happened to me back in 2020 on a Dell XPS 15. You're not alone.

The short version: Windows is trying to talk to your computer's power management system (ACPI), but the driver or BIOS gave it bad info. It's almost never a hardware failure — it's a software mismatch. This error usually pops up after a Windows update, a driver update, or after you changed something in the BIOS like enabling overclocking or virtualization.

Let's fix it. Try these steps in order. Don't skip any, because the second one fixes most cases.

Fix steps

Step 1: Disable fast startup

Fast startup sounds cool but it's a common cause of ACPI errors. It messes with how Windows shuts down and restarts. Here's how to turn it off:

1. Press Windows + R, type powercfg.cpl, press Enter.
2. Click Choose what the power buttons do on the left.
3. Click Change settings that are currently unavailable (you need admin rights).
4. Uncheck Turn on fast startup (recommended).
5. Click Save changes and restart your PC.

This alone fixed the error for about 60% of people in my old help desk days. Try booting again. If it still breaks, move to step 2.

Step 2: Update chipset drivers

Outdated chipset drivers are the second biggest cause. Windows Update often misses these. You need to get them from your motherboard or laptop maker's site.

1. Go to your PC maker's support page (Dell, HP, Lenovo, etc.) or motherboard model page (ASUS, Gigabyte, MSI).
2. Search for your exact model — e.g., Dell XPS 15 9500.
3. Download the latest Chipset Driver or Intel/AMD Chipset Driver.
4. Run the installer, reboot, and test.

If you're on a custom-built PC, grab the chipset drivers from AMD or Intel directly. For AMD, use the AMD Chipset Driver from their site. For Intel, use the Intel Driver & Support Assistant.

Step 3: Reset BIOS to default

Sometimes a BIOS setting causes this ACPI error. It's quick and safe.

1. Restart your PC and press F2, Del, or F10 (depends on your PC) during boot to enter BIOS.
2. Look for an option like Load Optimized Defaults or Reset to Default.
3. Select it, confirm, then save and exit.
4. Boot into Windows.

This resets any overclocking or power settings that might confuse the ACPI driver. If you had XMP or DOCP enabled, you'll need to re-enable it after the test.

Alternative fixes

If the main steps didn't work, try these in order. They fix the remaining cases.

Alternative 1: Check for Windows updates

Yes, the same Windows update that broke it sometimes also fixes it. I've seen this more than once.

1. Go to Settings > Update & Security > Windows Update.
2. Click Check for updates.
3. Install all pending updates, including optional driver updates.
4. Restart.

Alternative 2: Repair ACPI driver with DISM

If the system image is corrupted, this helps.

1. Boot into Safe Mode (hold Shift while restarting, then Troubleshoot > Advanced Options > Startup Settings > Restart > press 4).
2. Open Command Prompt as admin.
3. Type: DISM /Online /Cleanup-Image /RestoreHealth and press Enter.
4. Wait for it to finish (takes 5-10 minutes).
5. Then type: sfc /scannow and press Enter.
6. Restart normally.

Alternative 3: Disable ACPI in BIOS (last resort)

This is a nuclear option. It might cause other issues like no sleep mode or fans running full speed. Only do this if nothing else works.

1. Enter BIOS again.
2. Look for ACPI Settings or Power Management.
3. Disable any option like ACPI 2.0 or ACPI 3.0 support.
4. Save and exit.

If you still get the error after this, it might be a failing motherboard. But that's rare — I've only seen it twice in 6 years.

Prevention tip

To stop this coming back, always install chipset drivers manually after a major Windows update. Windows Update tends to skip critical driver files for ACPI. Set a reminder to check your motherboard or laptop maker's site every couple of months.

Also, keep fast startup off. The speed gain is tiny for desktops, and it causes headaches like this one. I've had it off for years without issues.

That's it. You should be back to work now. If you're still stuck, check the Event Viewer logs (look for ACPI errors under System) and drop the details in the comments — I'll help if I can.