A blue screen is appearing with APC INDEX mismatch

[Asdf364]

S/N Edited

A blue screen is appearing with written APC INDEX MISMATCH and laptop is not opening...

[Max3Aj]

@5CD310CB25, Welcome to HP Support Community. 

Thank you for posting your query, I will be glad to help you. 

The APC_INDEX_MISMATCH Blue Screen error typically indicates a driver or system-level conflict, often related to audio, graphics, or system updates. Let’s walk through a few steps to help resolve this issue on your HP Laptop 15s-fq2717TU.

Boot into Safe Mode

Since your laptop isn’t starting normally, try booting into Safe Mode:

1. Turn off the laptop completely.
2. Turn it on and immediately press the F11 key repeatedly until the Recovery Environment appears.
3. Go to Troubleshoot > Advanced Options > Startup Settings > Restart.
4. After restart, press 4 or F4 to boot into Safe Mode.

Uninstall Problematic Drivers

Once in Safe Mode:

• Press Windows + X > Device Manager.
• Expand Sound, video and game controllers and Display adapters.
• Right-click and uninstall any third-party drivers (e.g., Realtek, Conexant, or NVIDIA/Intel graphics).
• Restart the system normally.

Update Drivers and Windows

If the system boots normally:

• Go to HP Support Assistant or download it from: HP Support Assistant | HP® Support
• Run it to check for and install all driver and BIOS updates.
• Also, go to Settings > Windows Update and install all pending updates.

Run HP Hardware Diagnostics

To rule out hardware issues:

• Turn off the laptop.
• Turn it on and immediately press Esc, then F2 to open HP PC Hardware Diagnostics.
• Run the System Test or at least the Memory and Hard Drive Tests.

System Restore (if needed)

If the issue started recently:

• Boot into Recovery (F11).
• Go to Troubleshoot > Advanced Options > System Restore.
• Choose a restore point before the issue began. 

I hope this helps. 

Take care and have a good day. 

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Select "Yes" on the bottom left to say “Thanks” for helping! 

Max3Aj

HP Support