In this detailed guide, we will show you how to fix this issue, irrespective of the cause.

What causes Classpnp.sys Windows 10 blue screen error?

There are a series of factors that can cause Classpnp.sys BSOD error. Below are some of the notable ones:

Faulty hardware: The most prominent reason Classpnp.sys error makes your device get stuck or fail is faulty hardware. You need to disconnect the hardware and restart your PC. Faulty software: Sometimes, this issue can be caused by a faulty or incompatible program. The solution to this is to uninstall the app.

What does Classpnp Sys do?

Classpnp.sys is a Microsoft Windows SCSI class system file that comes as part of the Windows OS. This critical file system ensures your PC runs smoothly. This system file comes with your Windows PC by default and should never be downloaded from third-party websites.

How do I fix Classpnp.sys error?

Before delving into the solutions in this section, below are some preliminary troubleshooting steps to try:

Remove faulty internal hardware (RAM, video card, or hard disk) Disconnect all external hardware Change SATA mode in BIOS (from AHCI to IDE and vice versa)

1. Uninstall recently installed programs

Some Windows users have reported the Classpnp.sys error to have appeared after installing a video game or software. In such a situation, the software is likely causing the error. If you can boot into Windows and go past the login screen, try to uninstall the game or software.

2. Run System File Checker

Sometimes, the Classpnp.sys error can be due to corrupt system files. If you can boot into your PC normally, the steps above should help you solve the problem. If you can’t boot into your PC normally, follow the steps below: With this, the Classpnp.sys error should be fixed if corrupt system files cause it. Alternatively, you can repair your system files using a dedicated solution. This clever tool relieves the stress of running and waiting for multiple commands. Plus, it repairs any broken files and replaces the corrupt ones with an original version from its extensive database.

3. Restore Windows to an earlier point

Sometimes, the Classpnp.sys Blue Screen of Death error can be caused by changes you have made to your PC. To fix this, you need to restore your PC to an earlier point when everything is working properly. If you cannot boot into your PC normally, follow the steps below: After restoring your PC, check if the error is fixed.

4. Clean Install Windows

This is the least recommended solution to fix the Classpnp.sys error. However, if the problem started on a new computer or after you installed the updates, clean installing Windows with the latest available version can fix the issue. Make sure you take a backup of any available data before performing a clean install.  The Classpnp.sys error can be pretty frustrating. However, following the solutions in this guide is pretty easy to fix. If you are facing MULTIPLE_IRP_COMPLETE_REQUESTS error on your PC, check our detailed guide to fix it. Feel free to let us know the solution that helped you fix this issue in the comments below.

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