Killer WiFi network cards are commonly used on all Dell laptops. It comes with a Qualcomm chip inside. It is possible that the Killer 1535 network adapter’s drivers are at fault if it is not functioning properly. Uninstalling the device’s driver and then reinstalling it will resolve the issue.
I am sharing with you the Killer Wireless 1535 driver download link here. Download and reinstall it on your dell laptop.
Try this Dell driver updater first.
If theĀ dell updater doesn’t work then try installing Killer 1535 WiFi Card basic driver. It is a basic driver, you’ll have to install it manually.