Fix: Blue Screen of Death due to netwtw04.sys

Some users report getting frequent BSOD (Blue Screen of Death) crashes when using Google Chrome or another web browser. By looking at the crash dump, some users have managed to discover that the crash dump points towards a problem with netwtw04.sys (C:\ WINDOWS\ system32\ drivers\ Netwtw04.sys). Most of the time, the BSOD is accompanied by the Stop Code: Driver IRQL NOT LESS OR EQUAL.

Upon investigating the issue, it seems like this particular BSOD crash is indicative of an improper driver that is currently installed on your device. Most affected users point towards the Wireless-AC 7265 Wifi adaptor driver and Intel Dual Band Wireless AC 8260 as the most common culprits for this issue.

If you’re currently getting constant BSOD crashes pointing towards Netwtw04.sys, the following methods might help. Other users in a similar situation have managed to resolve the issues using a series of fixes. Please follow each of the methods below in order until you encounter a fix that stops the BSOD crashes caused by Netwtw04.sys from happening. Let’s begin!

Note: If you are overclocking anything, revert to the default clocking values to ensure the crash is not caused by a hardware component.

Method 1: Rolling back the Wireless Driver

Most users have managed to get the BSOD crashes to stop by rolling back their wireless driver. The exact model might vary from computer to computer, but Wireless-AC 7265 Wifi, AC 8260 WLAN (version 19.0.0.9) and Intel Dual Band Wireless AC are the most popular occurrences that might crash your system.

This method was usually effective for uses that have begun experiencing BSOD crashes caused by Netwtw04.sys after updating the Wireless driver to a newer version. In their case, reverting back to the previous driver made the BSOD crashes to stop. Here’s a quick guide on rolling back your Wireless driver:

  1. Press Windows key + R to open up a Run box. Then, type “devmgmt.msc” and hit Enter to open Device Manager.
  2. In Device Manager, expand the drop-down menu associated with Network adapters and look for your Wireless driver. The model and manufacturer will vary from PC to PC, but it should contain “Wireless” in the name.
  3. Once you identify the wireless adapter driver, right-click on it and choose Properties.
  4. In the Properties window of your wireless adapter, go to the Driver tab and click on the Roll Back Driver button. This serves the purpose of uninstalling the most recent version of the wireless driver and revert back to the previous driver (the one that was functioning properly).
  5. Once the previous driver is rolled back, restart your computer and keep an eye out for another BSOD crash.

If the crashes caused by Netwtw04.sys return, move over to Method 2.

Method 2: Downloading & Installing the Wireless driver manually

If rolling back the driver to a previous version is not an option, you can also try downloading a lower version of the wireless driver and install it on your system.

Unless you use a dedicated Wireless driver, Netwtw04.sys belongs to Intel(R) Dual Band Wireless-AC 8260, so the driver that you need to download can be found in Intel’s Download Center. But before we install the driver, you need to uninstall the current driver that is acting up and causing the BSOD crashes.

Here’s a quick guide on uninstalling the current Wireless driver and installing the latest version manually:

  1. Press Windows key + R to open up a Run box. Then, type “devmgmt.msc” and hit Enter to open Device Manager.
  2. In Device Manager, open the Network adapter drop-down menu, right-click on your wireless network adapter and click on Uninstall device.
  3. Visit this link (here) and download the latest available version of the wireless adaptor.
  4. Open the driver executable and follow the on-screen prompts to install it on your system. If you’re not automatically prompted to restart your computer at the end of it, restart your machine manually.
  5. Starting with the next startup, monitor your computer and see if this managed to stop the BSOD crashes caused by Netwtw04.sys. If the crashes are still happening, continue with the next method below.

Method 3: Manually Installing an older wireless driver version

If the first two methods have proved to be a bust, let’s try to manually download and install an older version of the wireless driver. Some users have finally managed to stop the BSOD crashes caused by Netwtw04.sys from occurring by manually downloading an older version.

Note: This is effective for those users that don’t have the option to roll back the driver from Device Manager.

Here’s a quick guide on downloading & installing an older wireless driver version:

  1. Visit the download center associated with your machine manufacturer. If you’re encountering this issue on an ASUS PC, use this link (here). For Acer, you can directly download the older version from this link (here).
  2. Once the older driver is downloaded, access the Start icon (bottom-left corner), click the power icon and hold the Shift key while clicking on Restart to reboot in Safe Mode.
  3. Once your computer boots back into Safe Mode, extract and open the older driver, then follow the on-screen prompts to install it on your system.
  4. Now to ensure that WU (Windows Update) doesn’t override the old wireless driver with the new version that produces the BSOD crash, download and install “Show or hide updates” troubleshooter package from this link (here).
  5. Open Show or hide updates troubleshooter and use it to block WU from updating the network wireless adapter driver. To do this, click on Hide updates, check the box associated with the Wireless adapter driver, then click Next.

If you’re still experiencing BSOD crashes caused by the Netwtw04.sys, continue with the method below.

Method 4: Installing the latest Beta BIOS update (only on ASRock motherboards)

As a number of users have reported on Intel’s community forums, BSOD crashes pointing towards Netwtw04.sys can also occur due to an incompatibility between Raven CPU and Intel’s Wi-Fi drivers. Fortunately, AsRock released an update patch that fixes this incompatibility on most of their models.

If you’re seeing this issue occur on a PC that uses an ASRock motherboard, you might be able to fix the issue by applying the latest Beta BIOS Update available for your specific motherboard option. To do this, you can visit this official Download Page (here) and download the latest BIOS update version available for your motherboard model (beta releases are at the bottom of the list).

Note: Keep in mind that updating the BIOS is not a conventional operation and has the potential of damaging your machine if done incorrectly. If you are determined to go through with this operation, please read the official documentation (here) carefully and follow the instructions to the letter.

Kevin Arrows
Kevin is a dynamic and self-motivated information technology professional, with a Thorough knowledge of all facets pertaining to network infrastructure design, implementation and administration. Superior record of delivering simultaneous large-scale mission critical projects on time and under budget.

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Fix: Blue Screen of Death due to netwtw04.sys

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