How To Repair: CLASSPNP.SYS BSOD Problem

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SYS file errors such as CLASSPNP.SYS are usually caused by faulty hardware or corrupted device driver files. Because of the importance of CLASSPNP.SYS to the functionality of the MSDN Development Platform U.S. and other Windows functions, any corruption or damage to this file can cause critical system errors in the form of a Blue Screen of Death (BSOD).


Classpnp.sys is a Windows system file that is a driver for SCGI devices. If these files are damaged, damaged or deleted, the system encounters problems and is suspended from the “Start Windows” screen.

Here are some useful steps to solve this issue.

Restart the computer in safe mode


Try starting your PC in safe mode. However, there are very few ways to start your PC this way, but sometimes it works and allows you to access your PC. Press the Del button continuously during Windows startup. The system boot menu is loaded.

You can start your PC in “Safe mode with command prompt”. Once your PC has started, you will see the prompt instead of the Windows Explorer. Simply type explorer.exe and press Enter. It loads Windows Explorer and you can start your PC.

Updating graphics card drivers

Graphics card drivers are important for all computers because they tell the operating system (Windows 10) how to use your graphics card. Updating the graphics card drivers is sometimes necessary if you want to run a game that requires a newer driver. It is very important to select the right drivers for your graphics card, otherwise your computer may crash.

Upgrading the BIOS version

Update BIOS

Updating your PC BIOS can offer many benefits, but it is important to understand the risks. Do not touch it if there is no clear and compelling reason to update your UEFI firmware.

January 2021 Update:

We now recommend using this tool for your error. Additionally, this tool fixes common computer errors, protects you against file loss, malware, hardware failures and optimizes your PC for maximum performance. You can fix your PC problems quickly and prevent others from happening with this software:

  • Step 1 : Download PC Repair & Optimizer Tool (Windows 10, 8, 7, XP, Vista – Microsoft Gold Certified).
  • Step 2 : Click “Start Scan” to find Windows registry issues that could be causing PC problems.
  • Step 3 : Click “Repair All” to fix all issues.


Step 1 Find the BIOS version used by your computer’s motherboard.
Step 2 Check if BIOS updates are available.
Step 3 Prepare your computer for the update
Step 4 Backup the existing BIOS version
Step 5 Update your computer or motherboard BIOS

Update your PC device drivers


It is very likely that errors in your CLASSPNP.SYS Blue Screen are due to corrupt or obsolete device drivers. Drivers may work one day and suddenly stop working the next for various reasons. The good news is that you can update the device driver often to fix your BSOD problem.

Although it is likely that you already have the latest driver, if you have problems with a device, you can try to fix it by updating or reinstalling the driver. Here’s how:

Select the Start button, enter Device Manager and select it from the results list.

Expand one of the categories to find the name of your device, then right-click (or hold down) and select Update Driver. For graphics cards, expand the Display Adapter category, right-click your graphics card and select Update Drivers.

Select Automatically check if the driver has been updated.

If Windows does not find a new driver, you can search for one on the device manufacturer’s website and follow their instructions.

If these steps do not work, try reinstalling the driver: Open the Device Manager, right-click the device name and select Uninstall. Restart your PC and Windows will try to reinstall the driver.

RECOMMENDED: Click here to troubleshoot Windows errors and optimize system performance