In the Device Manager, locate your Wi-Fi adapter, right-click, and go to Properties. Under the Power Management tab, uncheck the option that allows the computer to turn off the device to save power. Check for any background processes or applications that might be using your internet bandwidth. Close unnecessary applications and browser tabs. Run a thorough antivirus and anti-malware scan on your PC. Malware can affect your internet speed. Make sure your operating system is up-to-date. Windows updates often include fixes for various issues, including network-related problems.