Microsoft Operating System comes with SCSI Class System Files and one such is the CLASSPNP.SYS which enables the users to access the OS smoothly. However, if the driver gets corrupted or failed to respond, then SYS file error arises which makes your computer stuck on the boot screen and it is usually known as CLASSPNP.SYS error.
What is classpnp.sys BSOD Error?
As stated earlier, CLASSPNP.SYS is a Window SCSI Class System File which comes with the Windows Operating System. Whenever the system detects the faulty hardware or corrupt drivers, then CLASSPNP.SYS error arises in which the display of the computer turns blue and hence, it comes under the category of Blue Screen of Death errors. Some of the BSOD errors are very easy to fix but this is a little bit tough to fix this error because it doesn’t allow the users to boot into the system.
Most of the time Blue Screen of Death error occurs when Windows 10 loads, so you have to troubleshoot the issue in Safe Mode with networking. Here is the detailed step by step procedure to boot your system in Safe Mode.
Why classpnp.sys BSOD Error occurs?
This is one of the Blue Screen of Death errors encountered by many users in Windows 10. Though there can be various reasons behind this error. However, I have listed some common reasons responsible for this error. Here are the reasons:
- The hardware failure.
- Corrupted system file.
- BIOS configuration.
- Outdated or Incompatible Device Drivers.
Fix classpnp.sys Blue Screen of Death Error in Windows 10
So, if you are facing CLASSPNP.SYS Blue Screen of Death error then need not worry as there are ample solutions that will help you to fix the error. Now, go through the below-mentioned solutions to resolve the issue.
Update Device Drivers
No doubt the drivers enable the OS to run smoothly but sometimes, they failed to respond or stopped working due to multiple reasons. So, you will have to look at the drivers and make sure they are updated and for your solace, the detailed steps are listed below.
- If you are using Windows 10, then hover your mouse cursor to the Start menu and then right-click on it. Soon, you will get a list of applications, select ‘Device Manager’.
- Thereafter, a new window will appear on the screen which will feature a list of drivers.
- Now, select the disk drive, click on the arrow button to get the featured driver.
- Now select the driver, right-click on it and then choose an option ‘Update Driver’.
Run System File Checker
SFC is an inbuilt feature that scans and repairs the corrupted or missing files. The task is quite simple and following the same will help you to get rid of classpnp.sys BSOD error. Now, go through the steps listed beneath.
- First and foremost, right-click on the Start icon.
- From the list, click on Command Prompt (Admin) to run the cmd as an administrator. If the confirmation box appears, then click on the ‘Yes’ button.
- Thereafter, you will get a command box and here you will have to type “sfc/scannow” without quotation mark and then press the Enter key.
- The system will take some time to scan the corrupted or missing files. So have patience and give time to your PC to fix the issue.
Remove Faulty Hardware
The prime reason for an error classpnp.sys BLUE SCREEN is the faulty hardware. So, you must remove the recently added video card, RAM stick and others to fix the issue. However, if you have not inserted any such hardware recently, then remove the wireless card and restart your computer. If the issue is resolved, then insert the respective cards.
If your PC has multiple slots and you are using a single slot RAM, then change the slot and restart your computer.
Update the BIOS
While booting process in under progress in your computer, BIOS (Basic Input and Output System) prompts the hardware initialization. So, CLASSPNP.SYS error can be fixed by updating your BIOS. To do so follow these steps:
- Press Windows+R keys to open the Run dialog box, and type msinfo32 and press Enter.
- In the next window, check your current BIOS Version/Date and go to its official website.
- Check the Support or Download section on the official website and search for the latest BIOS update if any.
- Download the desired file and install it and then Restart your computer and check for the error.
Get access to your PC via Safe Mode
If the error won’t allow you to access the Login Panel then you can use the Safe Mode feature to fix the issue.
- Make sure your PC is turned off.
- Now turn ON your PC and when you will find the login panel on your screen, then press the Power button to turn off the PC completely.
- Soon, you will get the “Preparing Automatic Repair” logo on your screen. However, if you didn’t find such a logo, then repeat the above-mentioned steps.
- Thereafter, you will get two tabs, i.e. ‘Advanced Options’ and ‘Restart’, click on ‘Advanced Options’.
- After that, the Windows will offer you an additional three options, select ‘Troubleshoot’.
- Now, move in the ‘Advanced Options’ listed in the ‘Troubleshoot’ section.
- In the ‘Advanced Options,’ you will get a list of options, select ‘Startup Settings’
- And then click on ‘Restart’.
- After restarting the Windows, you will get a series of options; press key 5 to enter the Safe Mode with Networking.
- Once you get access in the Safe Mode, run SFC and update the driver.
Uninstall recently added software or applications
Sometimes, the apps or the software become the prime reason behind an issue ‘CLASSPNP.SYS’ and due to the same, the OS failed to respond properly. So, to resolve an issue you will have to uninstall such applications or software. The process is simple and the steps for the same are mentioned below.
- Open Control Panel by pressing Win+X+P keys together. Thereafter, a new window will appear which will show the list of applications and computer features.
- Move to the ‘Programs’ section and click on ‘Uninstall a Program‘.
- Soon, you will get the bunch of applications, select the one which you have recently installed and then right-click and choose to ‘’Uninstall’ the software from your system.
- If it will ask for a confirmation message, click on ‘Yes’ button to uninstall the program.
- This is a unique feature provided by the Windows OS which reverts back the PC to the working condition. So, if you can log in to your computer and want to restore the system, then click on the ‘Start’ menu, type ‘System Restore’ in the search bar and hit ‘Enter’ key.
- Thereafter, you will be asked to ‘Create a System Restore Point’. Perform the task and click on the ‘OK’ button.
However, if you failed to login to your PC, then you can restore your PC through the boot process.
- Turn off your PC and then turn it ON.
- If you get the Login panel in the display, then press the Power button to turn off the PC completely.
- Now, turn ON the PC and then the display will show ‘Preparing Automatic Repair’.
- Beneath the same, it will show ‘Advanced Options’, click on it.
- Thereafter, click on ‘Troubleshoot’.
- In the Troubleshoot section, you will get an ‘Advanced options’ feature, click on it.
- Now click on ‘System Restore’.
- And then the Windows will show the restore points, select the one and click on the ‘Next’ button.
- Confirm the restore point you have selected and then click on the Finish button.
- That’s it, after completing the above task, soon you will get the PC in the working condition.
Clean Install Windows
This is the last but least recommended solution to fix the classpnp.sys Blue Screen of Death error in Windows. However, if the problem has started on the new computer or after installing the updates then this error can be fixed by clean installing Windows with the latest available version.
Before performing the clean install please take a backup of available data
Hence, these were effective solutions to fix classpnp.sys BSOD issue. However, if you stuck amid the process or need any assistance, then post in the comment box and thereafter the techies will effectively assist you.