Some users have contacted us regarding their Killer Networking adapters not working after a Windows Update. This issue has affected various adapters, including the 1525, 1535, and 1550. Although we are as yet unsure exactly which update is causing this issue, there seems to be a connection with specific machine manufacturers having pushed an outdated version of the Killer Control Center through Windows Update, along with extremely outdated wireless drivers, which leads to a corrupted device driver.
The following troubleshooting steps should allow you to resolve the issue.
- If your machine has Internet access through Ethernet, or if you can move files onto the computer using a USB thumb drive or some other medium, clean installing to the most recent version of the Killer Control Center and device drivers is the best way to resolve this issue. Click here for the guide on clean installing the latest Killer Control Center and device drivers.
- (Code 10) If the clean install does not solve the issue, try manually installing the latest device drivers for your Killer Wireless device. Doing so will hopefully replace the corrupted device driver. Click here for the guide to manually install drivers in Device Manager.
- If manually installing the driver does not resolve the issue, or if the network adapter is not present in Device Manager, try clean installing the drivers in Device Manager. Doing this is different than clean installing the Killer Control Center or simply manually installing the drivers in Device Manager. This procedure will hopefully remove the corrupted driver from the Windows Driver Store, allowing you to update to a working driver. Click here for our guide on clean installing drivers in Device Manager.
- If none of the above resolves the issue, then the problem may be due to something that is not strictly related to your wireless adapter or drivers but is causing the adapter to malfunction. Check the support downloads page for your machine or motherboard manufacturer and make sure that you have the latest BIOS available, as well as the newest chipset drivers available.
- If none of the above resolves your issue, you may need to uninstall whatever update caused the problem. Click here for our guide on uninstalling Windows Updates. Please note that this guide only refers to Microsoft Windows Updates specifically. It’s possible that the update that caused the issue was not an update to Microsoft Windows, but an update to something else on your system. Keep that in mind if you find yourself manually uninstalling recent updates, which we cover in the linked guide.
- If you have followed every step in this guide and still have not been able to establish wireless connectivity, try discharging your machine to reset the CMOS. Click here for our guide on discharging your machine.
- If none of the above resolved the issue, then you may need to resort to resetting Windows. Resetting Windows may result in lost files and applications, so restoring a backup is preferable if you have one available. Click here for Microsoft’s information on resetting Windows and click “Reset your PC.” Please be sure to read the details of what resetting your machine will do. Other options on that page may better fit your needs. If you do go this route, make sure you install the latest Killer Control Center and drivers as soon as Windows updates to 1803 or later before other updates can take place – this is best done using our clean install guide (click here). To find out which version of Windows is currently installed, click Start, type winver, and press Enter. Refer to the “Version” number. When resetting your PC or reinstalling Windows, this number may change as Windows updates. As soon as the build is 1803 or newer, install the latest Killer Control Center and drivers using the clean install guide.
- Unfortunately, if none of the above resolves your issue, your next step will be to contact your machine or motherboard manufacturer for RMA or repair options. When a wireless network adapter’s driver is updated, the update flashes the firmware on the wireless chip. If none of the above solved the problem, then this indicates that the adapter is no longer capable of accepting a flash, and will need to be replaced. Alternatively, the machine or motherboard manufacturer may have an unpublished BIOS update or chipset driver that can resolve the issue.