Fix APC_INDEX_MISMATCH Stop code 0x00000001 on Windows 10

Windows Frequently Restart with, APC_INDEX_MISMATCH STOP 0x00000001 Blue Screen Error At Startup? This BSOD Mostly occurs Due To the incompatible graphics driver, something wrong with the currently installed Display driver. Also, Some times Corrupted system files, virus infection, Disk Drive error etc also cause APC_INDEX_MISMATCH Blue Screen Error.


If you Are also Getting Blue Screen Error APC_INDEX_MISMATCH BSOD Stop code 0x00000001 At startup. Here we have some working solutions to get rid of this. First Remove All External Devices ( printer, Scanner, external HDD, USB ) and Try to start windows normally. If started normally then any external device causing the issue, attach devices one by one to find out the problematic device.

Install windows update

Make sure you have installed the latest Windows updates on your computer. Recently Microsoft has released new cumulative update KB5001567 with fix for the Blue Screen of Death “APC_INDEX_MISMATCH” and “win32kfull.sys” errors.

Addresses an issue that might cause a blue screen when attempting to print to certain printers using some apps and might generate the error, APC_INDEX_MISMATCH. Source microsoft

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Boot Into safe mode

Due to the blue screen error, you might not boot into your system normally. If so, please boot your computer into safe mode with Networking To Access windows desktop then perform steps below. If after one Restart windows started normally then you can directly apply bellow solutions to avoid APC_INDEX_MISMATCH Blue Screen Error.

Update Installed Drivers

As discussed incompatible Graphics Driver mostly cause this BSOD error, So before apply other solutions make sure all installed drivers are updated and working properly with the current windows version.

Press Win + R, type devmgmt.msc and hit enter key to open device manager. If you find an Unknown device or the one with a yellow exclamation mark then you should instantly update the driver. Or you can also install the updates directly from the manufacturer’s site.

Also Specially Expand the Display Adapters -> Right Click on Installed Graphics Driver then First try to update the Driver. If Results Already Latest update installed then simply again right-click on installed graphics driver and select uninstall. Then After Disable Fast startup Feature ( for Windows 10 users ) Repair Corrupted system files, check and fix disk drive Errors by following bellow steps and Restart windows normally.

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update Graphic Driver

Disable Fast startup Feature

This Step Especially applicable for Windows 10 users. the hybrid shutdown ( Fast startup Feature ) added to make windows faster but for some, this feature causes different problems. Some Windows users report, Able to fix different Startup errors, Blue screen Errors after Disable Fast startup Feature.

To Disable Fast startup Feature open Control panel -> power options (Small icon view ) -> Choose What the power buttons do -> click on Change Settings that Are Currently Unavailable. Then Here under Shutdown Settings Uncheck the option Turn on Fast Startup ( Recommended ) Click Save Changes.

turn off fast startup feature

Fix corrupted system files

Also, some Times corrupted system Files Cause Different Startup Errors to include APC_INDEX_MISMATCH BSOD Stop code 0x00000001. You Can Run the system file checker tool to verify or Restore missing corrupted system files.

To run System file checker Tool press the Windows Key and type cmd – > Right-click on the cmd and click Run as Administrator. Then type command sfc /scannow in the Command Prompt window and press Enter key to run this command.

Run sfc utility

This Will Start scanning for missing, corrupted system files, if found any the utility automatically restores them from a special folder located on %WinDir%\System32\dllcache. wait until 100% complete the scanning process after that Restart windows.

Note: if system file checker results unable to repair corrupted system files, then run DISM Tool which repairs the system image and allow SFC utility to do its job.

Check Disk Drive Corruption

Disk Drive Errors, Bed Sectors also cause Different startup problems, windows not booting, frequently restart with different BSOD Errors. We Recommend To check and fix disk Drive Errors using CHKDSK command utility.

Open Command prompt as administrator, Then type chkdsk C: /r /f /x and hit the enter key. Press Y and Restart windows.

Run Check disk on Windows 10

Note: Chkdsk for check disk drive, C: is the drive letter check for errors, /r Locates bad sectors and recovers readable information. /f Fixes errors on the disk and /x Forces the volume to dismount first, if necessary.

After 100% complete the Scanning process the system will Restart itself and Start normally.

Optimize And check virus infection

When Windows Start normally we recommend checking for virus and malware infection by install a good antivirus, and anti-malware application with the latest updates and performing a full system scan.

Also install a Free System optimizer tool like Ccleaner to clean junk, cache, cookies, system Error files etc and fix Different registry Errors.

Always Avoid installing Free cracked, nulled Applications. Regularly check and scan for malware virus infection and run optimizer tool. To run windows smoother and avoid Different problems.

These are some most applicable solutions to fix APC_INDEX_MISMATCH STOP 0x00000001 blue screen on Windows computers. Have any query, Suggestions Feel Free to discuss on the comments below.

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